# CMF Watch 3 Pro The text version of the iDevice Guide at https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap. Same data as the page, last updated 2026-10-21. > A $79 smartwatch from Nothing's CMF brand with a 1.43-inch AMOLED screen, built-in dual-band GPS, 131 sport modes and up to 13 days of typical battery life. It works with iPhone and Android through the Nothing X app. - Status: On sale - List price: $79 (The official starting price.) - Guide: https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap - Last updated: 2026-10-21 ## Can it do this? - **How long does the battery last?** Nothing rates up to 13 days of typical use, 10 days of heavy use and 4.5 days with the always-on display and heavy use. A full charge takes 99 minutes. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-how-long-does-the-battery-last)) - **What does it cost?** It costs $79. That is the list price. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-what-does-it-cost)) - **Does it have GPS?** Yes, built-in dual-band GPS (L1 and L5), plus GLONASS, Galileo, QZSS and BeiDou. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-does-it-have-gps)) - **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. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-can-it-get-wet-shower-pool-swimming)) - **Does it work with my phone?** Yes, it works with an iPhone or an Android phone. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-does-it-work-with-my-phone)) - **How big is the screen?** The screen measures 1.43 inches. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-how-big-is-the-screen)) - **How heavy is it?** It weighs 51g to 52.4g. The weight varies by size or finish. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-how-heavy-is-it)) - **How big is the battery?** The battery is 350 mAh. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-how-big-is-the-battery)) - **How sharp and bright is the screen?** The screen reaches 670 nits at its brightest. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-how-sharp-and-bright-is-the-screen)) - **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. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-what-kind-of-screen-is-it)) - **Does it measure blood oxygen?** Yes, it measures your blood oxygen. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-does-it-measure-blood-oxygen)) - **Does it track heart rate?** Yes, it tracks your heart rate. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#can-does-it-track-heart-rate)) ## Works with A smartwatch that works with Android. It also works with iPhone, with some limits. - **Which iPhones does the CMF Watch 3 Pro work with?** Works with limits. It works with every iPhone that runs iOS 13 or later, from the iPhone 6s on. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). Checked 2026-10-20. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#q-which-iphones)) - **Does the CMF Watch 3 Pro work with Android?** Works. Yes, 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. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). Checked 2026-10-20. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#q-android)) - **Does the CMF Watch 3 Pro work with Apple Health?** Works. Yes. The Nothing X app can sync the watch's data to Apple Health. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). Checked 2026-10-20. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#q-apple-health)) - **How does the CMF Watch 3 Pro handle charging?** Works. It charges with the cable in the box. A full charge takes 99 minutes. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). Checked 2026-10-20. - **Does the CMF Watch 3 Pro work with Google Health Connect?** Works. Yes, on Android 9.0 or above. The Nothing X app can sync the watch's data to Google Health Connect. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). Checked 2026-10-20. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#q-google-fit)) - **Does the CMF Watch 3 Pro work with iPhone?** Works with limits. Yes, 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. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). Checked 2026-10-20. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#q-iphone)) - **How does the CMF Watch 3 Pro handle straps?** Works. Yes. The strap is removable, so you can swap it. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). Checked 2026-10-20. - **Does the CMF Watch 3 Pro work with Strava?** Works. Yes. The Nothing X app can sync workouts to Strava. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). Checked 2026-10-20. ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#q-strava)) ## 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. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#faq-how-much-does-the-cmf-watch-3-pro-cost)) ### 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. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#faq-how-long-does-the-battery-last)) ### 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. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#faq-does-it-have-built-in-gps)) ### 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. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#faqs-is-the-cmf-watch-3-pro-waterproof)) ### 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. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#faqs-what-health-features-does-it-have)) ### 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. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#faqs-how-many-sport-modes-does-it-have)) ### 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. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#faqs-does-it-have-a-running-coach)) ### 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. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro). ([on the Guide](https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap#faqs-can-i-take-calls-on-the-cmf-watch-3-pro)) --- Source: iDevice (https://idevice.com). Every spec, rumor and grade above links to where it came from. Full Guide: https://idevice.com/smart-watches/cmf-watch-3-pro/roadmap. This file: https://idevice.com/guide-text/cmf-watch-3-pro.md. ## Questions and answers ### Using it **What does it cost?** It costs $79. That is the list price. Source: CMF **Does it have GPS?** Yes, it has its own GPS. It works without your phone. Source: CMF **Does it work with my phone?** Yes, it works with an iPhone or an Android phone. Source: CMF **How big is the screen?** The screen measures 1.43 inches. Source: CMF **How heavy is it?** It weighs 51g to 52.4g. The weight varies by size or finish. Source: CMF **How sharp and bright is the screen?** The screen reaches 670 nits at its brightest. Source: CMF **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. Source: CMF **Does it measure blood oxygen?** Yes, it measures your blood oxygen. Source: CMF **Does it track heart rate?** Yes, it tracks your heart rate. Source: CMF ### Battery and charging **How big is the battery?** The battery is 350 mAh. Source: CMF ### 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. Source: CMF ### Price and models **Is there a newer one?** No. The CMF Watch 3 Pro is the current model. Source: iDevice ### Returns and warranty **How long do I have to return it?** 30-day returns The clock starts the day it arrives. Source: [Nothing](https://us.nothing.tech/policies/terms-of-service) **Is there a restocking fee?** Restocking fee: not stated by Nothing Source: [Nothing](https://us.nothing.tech/policies/terms-of-service) **Who pays return shipping?** You pay return shipping You pay the cost of sending it back. Source: [Nothing](https://us.nothing.tech/policies/terms-of-service) **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. Source: [Nothing](https://us.nothing.tech/policies/terms-of-service) **How long is the warranty?** 1-year warranty Source: [Nothing](https://us.nothing.tech/pages/terms-of-sales) **Is water damage covered?** Water damage not covered Exposure to liquid, moisture, dampness, sand or dirt. Source: [Nothing](https://us.nothing.tech/pages/terms-of-sales) **Is the battery covered?** Battery rules: not stated by Nothing Source: [Nothing](https://us.nothing.tech/pages/terms-of-sales) ### In the box **What's in the box?** CMF Watch 3 Pro, Charging cable, User guide and safety information, Warranty information. Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro) ### Works with **How does the CMF Watch 3 Pro handle straps?** Yes. The strap is removable, so you can swap it. Works Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro) **Does the CMF Watch 3 Pro work with Strava?** Yes. The Nothing X app can sync workouts to Strava. Works Source: [Nothing](https://us.nothing.tech/products/cmf-watch-3-pro)