CMF Watch 3 Pro
Watches

CMF Watch 3 ProPrice, Battery Life, Specs & GPS

Ask about the CMF Watch 3 Pro

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Released Guide updated

The CMF Watch 3 Pro is Nothing's low-cost smartwatch. It has a 1.43-inch AMOLED screen, built-in dual-band GPS, heart rate, blood oxygen, sleep and stress tracking, and 131 sport modes with a running coach. Nothing rates the battery at up to 13 days of typical use and 10 days of heavy use.

Where it shines

  1. Fitness

    Pick from 131 sport modes, each with pace, heart rate zones and recovery time, on a watch that costs $79.

  2. Running

    Running coach plans of 8 to 16 weeks pair with dual-band GPS on L1 and L5 to track every route.

  3. Sleep

    Short naps count too: it detects sleep stages, has a high-precision mode, and 13 days per charge keeps it on your wrist overnight.

Comparison

Compare watches

How it compares

Price

$79

The official list price to buy it.

Battery life

~13 days

How long it lasts on its own, away from a charger.

Price

CMF Watch 3 Pro
$79
Amazfit Active 2
$99.99
Amazfit Active 3 Premium
$169.99
COROS PACE 3
$229
Gabb Watch 3e
$229.99

Battery life

CMF Watch 3 Protypical use
~13 days
COROS PACE 3
15 days
Amazfit Active 3 PremiumCompare →
~12 days
Amazfit Active 2Compare →
~10 days
Gabb Watch 3enormal use
18 hrs

Current list prices.

Battery life can vary based on usage, settings and firmware version.

If not this one

  • If battery life decides itGarmin Venu

    Smartwatch mode runs up to 12 days on the 45mm and 10 days on the 41mm between charges.

    $549.99
  • If GPS and navigation decides itCOROS APEX 4

    Global offline maps with street and trail names and turn-by-turn directions, plus dual-frequency GPS and a dual-range barometer.

    $429
  • If health sensors decides itApple Watch Ultra 4

    Stronger on health sensors, in iDevice's view.

    $799

Most paired with

Everything it works with

What the CMF Watch 3 Pro works with

A smartwatch that works with Android. It also works with iPhone, with some limits.

Does the CMF Watch 3 Pro work with Android?

Works

With Android 6.0 or later through the Nothing X app. Quick replies and camera remote control work on Android. ChatGPT needs a Nothing OS phone.

What you need
The Nothing X app from Google Play; Android 6.0 or later.
EarbudsNot confirmed

Does the CMF Watch 3 Pro work with iPhone?

Some features missing

With iOS 13 or later through the Nothing X app. Quick replies to messages and camera remote control do not work with iPhone, and ChatGPT needs a Nothing OS phone.

What you need
The Nothing X app from the iOS App Store; iOS 13 or later.
What works
Pairing, notifications, health and workout tracking, music control and Bluetooth calls.
Good to know
No quick replies, no camera remote control and no ChatGPT with an iPhone.

Quick answers

All FAQs

Quick answers

How much does the CMF Watch 3 Pro cost?
Nothing's US store lists it at $79. It comes in light green, orange, light grey and dark grey.
Should I buy the CMF Watch 3 Pro?
Good to buy. No new model is close and the price is near its low, so we'd buy now. It is $79 at Nothing, price checked Nov. 4, 2026. See the full answer on the Nothing CMF Watch 3 Pro
How long does the battery last?
Nothing rates it at up to 13 days of typical use and 10 days of heavy use. With the always-on display on and heavy use, Nothing rates 4.5 days, and power saving mode stretches it to 60 days. A full charge takes 99 minutes.

Get CMF Watch 3 Pro updates

Email me when there's news.

Works with

Does it work with…?

Works

With Android 6.0 or later through the Nothing X app. Quick replies and camera remote control work on Android. ChatGPT needs a Nothing OS phone.

What you need
The Nothing X app from Google Play; Android 6.0 or later.
Works

The Nothing X app can sync the watch's data to Apple Health.

What you need
The Nothing X app on an iPhone.
Works

On Android 9.0 or above. The Nothing X app can sync the watch's data to Google Health Connect.

What you need
An Android phone on Android 9.0 or above.
What works
Syncing to Google Health Connect on Android 9.0 or above.
Some features missing

With iOS 13 or later through the Nothing X app. Quick replies to messages and camera remote control do not work with iPhone, and ChatGPT needs a Nothing OS phone.

What you need
The Nothing X app from the iOS App Store; iOS 13 or later.
What works
Pairing, notifications, health and workout tracking, music control and Bluetooth calls.
Good to know
No quick replies, no camera remote control and no ChatGPT with an iPhone.
Some features missingWorked out from the official minimum

It works with every iPhone that runs iOS 13 or later, from the iPhone 6s on.

  • iPhone 18 Pro and iPhone 18 Pro Max: yes, on iOS 13 or later
  • iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, iPhone Air and iPhone 17e: yes, on iOS 13 or later
  • iPhone 16, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max and iPhone 16e: yes, on iOS 13 or later
  • iPhone 15, iPhone 15 Plus, iPhone 15 Pro and iPhone 15 Pro Max: yes, on iOS 13 or later
  • iPhone 14, iPhone 14 Plus, iPhone 14 Pro and iPhone 14 Pro Max: yes, on iOS 13 or later
  • iPhone 13 mini, iPhone 13, iPhone 13 Pro and iPhone 13 Pro Max: yes, on iOS 13 or later
  • iPhone 12 mini, iPhone 12, iPhone 12 Pro and iPhone 12 Pro Max: yes, on iOS 13 or later
  • iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max: yes, on iOS 13 or later
  • iPhone XR, iPhone XS, iPhone XS Max and iPhone X: yes, on iOS 13 or later
  • iPhone 8 and iPhone 8 Plus: yes, on iOS 13 or later
  • iPhone 7 and iPhone 7 Plus: yes, on iOS 13 or later
  • iPhone 6s and iPhone 6s Plus: yes, on iOS 13 or later
  • iPhone SE (2nd generation), iPhone SE (3rd generation) and iPhone SE (1st generation): yes, on iOS 13 or later
  • iPhone 17 Pro: yes, on iOS 13 or later
  • iPhone 17 Pro Max: yes, on iOS 13 or later
  • iPhone Air: yes, on iOS 13 or later
  • iPhone SE (2nd generation): yes, on iOS 13 or later
  • Any iPhone not listed: no, it cannot run that iOS version

Worked out from the official minimum ("iOS 13 or later") and Apple's list of the iPhones that run it, not a separate test. See the sources.

No quick replies, no camera remote control and no ChatGPT with an iPhone.

Works

The Nothing X app can sync workouts to Strava.

What you need
The Nothing X app and a Strava account.

Most paired with

Does the CMF Watch 3 Pro work with Android?

Works

With Android 6.0 or later through the Nothing X app. Quick replies and camera remote control work on Android. ChatGPT needs a Nothing OS phone.

What you need
The Nothing X app from Google Play; Android 6.0 or later.
EarbudsNot confirmed

Does the CMF Watch 3 Pro work with iPhone?

Some features missing

With iOS 13 or later through the Nothing X app. Quick replies to messages and camera remote control do not work with iPhone, and ChatGPT needs a Nothing OS phone.

What you need
The Nothing X app from the iOS App Store; iOS 13 or later.
What works
Pairing, notifications, health and workout tracking, music control and Bluetooth calls.
Good to know
No quick replies, no camera remote control and no ChatGPT with an iPhone.

What you need

Does the CMF Watch 3 Pro work with Android?

Works

With Android 6.0 or later through the Nothing X app. Quick replies and camera remote control work on Android. ChatGPT needs a Nothing OS phone.

What you need
The Nothing X app from Google Play; Android 6.0 or later.

Does the CMF Watch 3 Pro work with iPhone?

Some features missing

With iOS 13 or later through the Nothing X app. Quick replies to messages and camera remote control do not work with iPhone, and ChatGPT needs a Nothing OS phone.

What you need
The Nothing X app from the iOS App Store; iOS 13 or later.
What works
Pairing, notifications, health and workout tracking, music control and Bluetooth calls.
Good to know
No quick replies, no camera remote control and no ChatGPT with an iPhone.

How it works

Works

It charges with the cable in the box. A full charge takes 99 minutes.

What you need
The included charging cable.
Works

The strap is removable, so you can swap it.

At a glance

CMF Watch 3 ProTHIS PRODUCTCMF Watch 3 ProAmazfit T-Rex 3COMPARE WITHAmazfit T-Rex 3
Display
1.43-inchAMOLED, 60 fps refresh rate
1.5-inchAMOLED, 480 × 480, up to 2,000 nits, Gorilla Glass
Battery
Up to 13 daystypical use
Typical use: up to 27 daysaccurate GPS: up to 42 hrs; GPS max: up to 180 hrs
Works with
iPhone and AndroidiPhone (iOS 13 and above) and Android (6.0 and above), Nothing X app
iPhone and AndroidiPhone (iOS 14 and above) and Android (7.0 and above), Zepp app
Water resistance
IP68
10 ATMcertified for freediving to 147 ft (45 m)
Price
From $79
$270.03 (regularly $279.99)
Design
Metal body with a liquid silicone strap
48.5 × 48.5 × 13.75mmstainless steel bezel, polymer middle frame
Show 2 more specs
Health sensors
Unknown
Heart rate, blood-oxygen saturation, stress level, heart rate variability (HRV)
Weight
Unknown
68.3gwithout strap
Technical specs
Connectivity
Dual-band GPS (L1 + L5), GLONASS, Galileo, QZSS and BeiDou
Dual-band GPS, 6 satellite systemsBluetooth 5.2; Wi-Fi; microphone (no speaker); offline maps
Charging
Unknown
Magnetic charging base
AI assistant
ChatGPT (Nothing phone users only)
Zepp Flow voice control (GPT-4o)
Buy
See prices
See prices
CMF Watch 3 Pro
Nothing

Good to buy.

No new model is close and the price is near its low, so we'd buy now.

CMF Watch 3 Pro

About Nothing

Nothing is a London technology company, co-founded and led by Carl Pei. It builds smartphones, audio products and AI tools around a design language it calls transparent in appearance and ethos, which is why you can see inside almost everything it makes.

Visit Nothing
More from Nothing we cover
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Where to buy

StorePriceIn stockAction
Nothing$79In stockBuy
Amazon$79In stockBuy

Price history

No new model is close and the price is near its low, so we'd buy now.

Lowest in 30 days
$59Oct 25
Highest in 30 days
$79Oct 20
Stores we check
2Nothing is cheapest
On sale since
Jul 22, 2025
Price checks
28 over 16 days

All smartwatch prices

50%40%30%20%10%0%50%40%30%20%10%0%

10 sales in the past year. The best was $59 in October, 40% off $99.

Returns and warranty

Returns
30-day returns· the clock starts the day it arrives
Warranty
1-year warranty
Returns and warranty details

Returns

  • You pay return shipping

    You pay the cost of sending it back.

  • Send it back like new

    You can return it for any reason within 30 days of getting it. Keep it in reasonable condition and send it back in the original box. Nothing may take money off for any loss of value.

Warranty

Covered

  • Defects in materials and workmanship

    The hardware as originally supplied: repair or replacement for defects caused by workmanship or build materials.

Not covered

  • Water damage

    Exposure to liquid, moisture, dampness, sand or dirt.

  • Accidents and misuse

    Accidents, neglect, misuse or abnormal use.

  • Scratches and dents

    Scratches, dents and cosmetic damage, unless Nothing caused them.

  • Normal wear and aging

    Ordinary wear and tear.

  • Loss or theft

    Damage from external causes including theft, fire and flooding.

  • Repairs by other shops

    Repairs by unofficial repair centers, or modifications.

  • Bands and accessories

    Software, consumable items and accessories, even if sold together with the product.

  • How it gets fixed

    Repair or replacement (rebuilt, reconditioned or new), chosen by Nothing. Covered repairs and replacements, including shipping and handling, are free within the warranty period. Repair or replacement does not extend the warranty.

Good to know

  • Items marked non-returnable on the site

    No refunds on products the site marks as non-returnable.

  • Faulty or not-as-described products

    If it is faulty and you tell Nothing within 30 days of delivery, you can pick repair, replacement or refund. A refund due after inspection is paid within 14 days of your notice.

What's in the box

What comes in the box with the CMF Watch 3 Pro?

Here is what you get when you open it.

CMF Watch 3 Pro
Charging cable
User guide and safety information
Warranty information

From Nothing. Checked Oct 20, 2026.

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Frequently asked questions

Questions about CMF Watch 3 Pro

Top questions

How much does the CMF Watch 3 Pro cost?
Nothing's US store lists it at $79. It comes in light green, orange, light grey and dark grey.
Should I buy the CMF Watch 3 Pro?
Good to buy. No new model is close and the price is near its low, so we'd buy now. It is $79 at Nothing, price checked Nov. 4, 2026. See the full answer on the Nothing CMF Watch 3 Pro
How long does the battery last?
Nothing rates it at up to 13 days of typical use and 10 days of heavy use. With the always-on display on and heavy use, Nothing rates 4.5 days, and power saving mode stretches it to 60 days. A full charge takes 99 minutes.
Does it have built-in GPS?
Yes. It has dual-band GPS (L1 and L5) and also uses GLONASS, Galileo, QZSS and BeiDou, so you can track a run or ride without your phone. Nothing rates GPS use at 17.2 hours.
Is the CMF Watch 3 Pro waterproof?
It is rated IP68 for water and dust: up to 30 minutes in still, clear water no deeper than 1.1 metres. It is not meant for swimming pools, shallow water or hot showers.
What health features does it have?
All-day heart rate, blood oxygen (SpO2), stress, sleep tracking that picks up naps and sleep stages, menstrual cycle tracking and a weekly Active Score. The readings are for personal reference, not medical use.
How many sport modes does it have?
131. It also spots 7 activities on its own, like walking, running, cycling and rowing, and fills in the workout if you forgot to start it.
Does it have a running coach?
Yes. It builds an 8 to 16 week running plan from your goals, fitness level and recovery, set up in the Nothing X app. After a workout it shows recovery time and 5K and 10K predictions.
Can I take calls on the CMF Watch 3 Pro?
Yes, over Bluetooth through your phone. It has two microphones and a speaker, and you can sync up to 30 contacts. Calls from third-party apps are not supported.
What is the screen like?
A 1.43-inch AMOLED at 466 x 466 pixels (326 ppi), up to 670 nits, with a 60 fps refresh rate. It has an always-on mode and more than 120 watch faces.
How big and heavy is it?
It is 4.7 cm wide and 1.44 to 1.52 cm deep, and weighs 51.0 g to 52.4 g depending on the colour.
Can I change the strap?
Yes. The strap is removable. The watch has a metal body and comes with a liquid silicone strap.
Does it have ChatGPT?
Only with a Nothing OS phone. ChatGPT on the watch is not available when it is paired with an iPhone or another Android phone.
What comes in the box?
The watch, a charging cable, a user guide with safety information, and warranty information.

Using it

What does it cost?
It costs $79. That is the list price.
Does it have GPS?
Yes, it has its own GPS. It works without your phone.
Does it work with my phone?
Yes, it works with an iPhone or an Android phone.
How big is the screen?
The screen measures 1.43 inches.
How heavy is it?
It weighs 51g to 52.4g. The weight varies by size or finish.
How sharp and bright is the screen?
The screen reaches 670 nits at its brightest.
What kind of screen is it?
It is an AMOLED screen. The pixels light themselves, so blacks are deep and it can dim to almost nothing.
Does it measure blood oxygen?
Yes, it measures your blood oxygen.
Does it track heart rate?
Yes, it tracks your heart rate.

Battery and charging

How big is the battery?
The battery is 350 mAh.

Water

Can it get wet (shower, pool, swimming)?
Yes, it survives a shower and a soaking. Its rating is IP68. Immersion beyond a metre is officially stated. Swimming laps and diving need a different rating, and it does not carry one.

Price and models

When did the CMF Watch 3 Pro come out?
It went on sale July 22, 2025.
Is there a newer one?
No. The CMF Watch 3 Pro is the current model.

Returns and warranty

How long do I have to return it?
30-day returns The clock starts the day it arrives.
Is there a restocking fee?
Restocking fee: not stated by Nothing
Who pays return shipping?
You pay return shipping You pay the cost of sending it back.
Can I return it if I opened or wore it?
Send it back like new You can return it for any reason within 30 days of getting it. Keep it in reasonable condition and send it back in the original box. Nothing may take money off for any loss of value.
How long is the warranty?
1-year warranty
Is water damage covered?
Water damage not covered Exposure to liquid, moisture, dampness, sand or dirt.
Is the battery covered?
Battery rules: not stated by Nothing

In the box

What's in the box?
CMF Watch 3 Pro, Charging cable, User guide and safety information, Warranty information.

Works with

How does the CMF Watch 3 Pro handle straps?
Yes. The strap is removable, so you can swap it. Works
Does the CMF Watch 3 Pro work with Strava?
Yes. The Nothing X app can sync workouts to Strava. Works
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