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Scratch-resistant sapphire glass with a vibrant 1.5" AMOLED display (48mm)
Scratch-resistant sapphire glass with a vibrant 1.32" AMOLED display (44mm) -
6 satellite system positioning with offline maps, route planning, and POI search
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180+ sport modes including hiking, rucking, and recreational diving.
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Built-in Two-Color LED Flashlight with Boost Mode
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Built-in Speaker and Microphone for Bluetooth Calling
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Military-grade design with a grade 5 titanium bezel and buttons
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Up to 25 days battery life (48mm)
Up to 17 days battery life (44mm)

Industry-Leading GPS
Accurately track every move, even under tall buildings or dense tree cover. Dual-band support from six satellite systems⁵ delivers a fast, reliable connection, ideal for demanding outdoor adventures from rugged hikes to intense trail races.

Every Beat Counts
The T-Rex 3 Pro is equipped with our advanced BioTracker™ sensor, delivering highly accurate heart-rate tracking even in challenging outdoor conditions. For those who want to push precision to the limit, pair it with the Helio Strap — our industry-leading arm-worn heart-rate monitor. Together, they provide pro-grade accuracy you can rely on, from steep hikes to intense trail races, ensuring every training decision is backed by the most precise data possible.
Up to 2-3 Weeks of Battery Life
Designed to keep up with your longest adventures, this watch delivers exceptional battery life⁸ so you can focus on the journey, not the charger. Whether you’re tackling multi-day treks, race weeks, or remote missions, it stays powered when you need it most.
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48mm
Up to 25 Days with Typical Use
Up to 38 Hours with Accurate GPS Mode
Up to 85 Hours with GPS Long Battery Life Mode
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44mm
Up to 17 Days with Typical Use
Up to 26 Hours with Accurate GPS Mode
Up to 60 Hours with GPS Long Battery Life Mode
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Real-Time Performance
See how you're performing compared to your previous workouts⁹. -

Zepp Coach™
Get personalized AI-generated training programs, including running plans for 5K, 10K, half and full marathons. -

Smarter Metrics
Track key performance metrics like VO₂ Max, Training Load, and Training Effect to optimize your training and make every workout count. -

PAI
Personal Activity Intelligence¹⁰ (PAI) is a simple health score based on your heart’s response to exercise, designed to help you track and improve cardiovascular fitness.
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Total Voice Control
Zepp Flow™ gives you full control of your watch using just your voice¹³. Easily adjust settings, check your Zepp Coach™ progress, and more. -

Message Replies
Type Android message replies¹⁴ using a full QWERTY keyboard or dictate them via speech-to-text. Zepp Flow™ optimizes your reply with suggestions or translations and sends it seamlessly. -

Bluetooth Peripherals
Connect to an action camera, heart rate belt, cadence meter, power meter, thermometer, speedometer, and more¹⁵.
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