Amazfit T-Rex 3 Pro vs Gabb Watch 3e: which should you buy?

Our pick

T-Rex 3 Pro for a dive-certified outdoor watch with no subscription
Gabb Watch 3e for a cellular watch a parent manages

Amazfit T-Rex 3 Pro

$399.99 (48 mm)

Get it if

You want a watch with no subscription.
You prefer turn-by-turn directions on your wrist.

Buy at Amazon$399.99

Checked Nov 15, 2026 · We may earn a commission.

Gabb Watch 3e

$209.99

Get it if

You want calls and texts with no phone nearby.
You prefer a watch a parent manages from MyGabb.
You prefer Safe Zone alerts sent to a parent.
You want a lighter watch body.

Buy at Gabb$209.99

Checked Nov 15, 2026 · We may earn a commission.

Get the T-Rex 3 Pro if you want an outdoor watch with offline maps, turn-by-turn directions and no subscription. Get the Gabb Watch 3e if you want a watch a parent manages, with calls and texts and no phone nearby.

What's different

Your own watch, or a child’s first phone
The T-Rex 3 Pro pairs with your phone over Bluetooth and has no cellular radio, and it needs no subscription. The Gabb Watch 3e works independently from any cell phone, with unlimited talk and text, and Gabb says you must select a phone plan to activate it.
Rated in days, or in hours
Amazfit rates the T-Rex 3 Pro at up to 25 days in typical use. Gabb expects 14 to 18 hours from the Gabb Watch 3e in normal use, and says the watch needs at least three bars of cell service to reach that.
Who manages the watch
The T-Rex 3 Pro is set up in the Zepp App, and you can install more watch apps from its app store. Contacts on the Gabb Watch 3e are managed by a parent in the MyGabb app, so the parent decides who the child can call, and its SOS button contacts a designated parent or guardian only, not 911.
Follow a route, or follow a child
The T-Rex 3 Pro has offline maps and turn-by-turn directions for the trail. The Gabb Watch 3e sends parents a Safe Zone alert within 15 minutes when their child enters or leaves a designated area.
Weight (without strap)
T-Rex 3 Pro52 g (1.83 oz)
Gabb Watch 3e (leads)35.5 g (1.25 oz)
The Gabb Watch 3e body is lighter, at 35.5 g (1.25 oz); the T-Rex 3 Pro is 52 g (1.83 oz) without its strap. The T-Rex 3 Pro has a 1.5 in screen in a 48 x 48 x 14 mm case; the Gabb has a 1.41 in screen and measures 46 x 40 x 14.5 mm. The T-Rex 3 Pro is rated 10 ATM, and Amazfit certifies it for diving; Gabb gives the Gabb Watch 3e an IP68 rating.

What's the same

Calls from the wrist
Built-in GPS
A touchscreen display

Tale of the Tape

T-Rex 3 Pro

Gabb Watch 3e

T-Rex 3 Pro: Up to 25 days Rated battery: typical use (Amazfit), normal use (Gabb)Gabb Watch 3e: 14 to 18 hrs
T-Rex 3 Pro: 52 g (1.83 oz) Weight (without strap)Gabb Watch 3e: 35.5 g (1.25 oz) ✓
T-Rex 3 Pro: Wi-Fi and Bluetooth only CellularGabb Watch 3e: Yes, with a Gabb phone plan
T-Rex 3 Pro: No ✓ Subscription required for full featuresGabb Watch 3e: Yes, a Gabb phone plan
T-Rex 3 Pro: Watch apps through Zepp SoftwareGabb Watch 3e: MyGabb, on a parent's phone
T-Rex 3 Pro: Turn-by-turn directions Navigation and location toolsGabb Watch 3e: Safe Zone alerts to parents
T-Rex 3 Pro: 1.5 in Display sizeGabb Watch 3e: 1.41 in
T-Rex 3 Pro: 48 x 48 x 14 mm Case sizeGabb Watch 3e: 46 x 40 x 14.5 mm
T-Rex 3 Pro: 10 ATM Water ratingGabb Watch 3e: IP68

FAQs

Which should you buy, the T-Rex 3 Pro or the Gabb Watch 3e?

The T-Rex 3 Pro for an outdoor watch with offline maps and no subscription; the Gabb Watch 3e for a cellular watch a parent manages for a child.

Which lasts longer on a charge, the T-Rex 3 Pro or the Gabb Watch 3e?

The T-Rex 3 Pro, on rated battery life: Amazfit rates it at up to 25 days in typical use, and Gabb expects 14 to 18 hours of normal use from the Gabb Watch 3e.

Which is lighter, the T-Rex 3 Pro or the Gabb Watch 3e?

The Gabb Watch 3e: 35.5 g (1.25 oz) for the watch body, against 52 g (1.83 oz) for the T-Rex 3 Pro without its strap.

Which works without a phone nearby, the T-Rex 3 Pro or the Gabb Watch 3e?

The Gabb Watch 3e, for calls and texts: it works independently from any cell phone on a Gabb phone plan. The T-Rex 3 Pro takes calls through your phone over Bluetooth, though its offline maps give phone-free route navigation.