Amazfit - T-Rex 3 Smartwatch 48mm Silicone - Black - (2025)
Customers are saying
Customers value the exceptional battery life provided by this product. Users consistently highlight this feature as a standout quality, noting that the performance is truly phenomenal.
Up to 20 Days of Battery Life
Stay charged for longer with up to 20 days of typical use, or up to 45 days in battery saver mode—perfect for extended outdoor adventures.
Rugged Military-Grade Durability
Built to withstand extreme environments, the Amazfit T-Rex 3 has passed 15 military-grade tests, making it ready for harsh weather, drops, and tough terrain.
Bright AMOLED Display
Enjoy a vivid, ultra-clear view on the 1.43” AMOLED touchscreen with 1,000 nit peak brightness—easy to read even in direct sunlight.
Dual-Band GPS & Offline Maps
Navigate with precision using dual-band satellite positioning and download offline maps to explore confidently without a phone connection.
100+ Sports Modes with Smart Recognition
Track over 100 activities—including hiking, skiing, and strength training—with smart auto-recognition for 8 common exercises.
24/7 Health Monitoring
Continuously track heart rate, blood oxygen, stress, and sleep quality, including sleep breathing rate and nap detection.
AI-Powered Fitness Guidance
Receive intelligent insights and recovery recommendations powered by Zepp Coach to help you train smarter and avoid overexertion.
Adventure-Ready Tools
Access a suite of essential tools like a compass, barometer, altimeter, and sunrise/sunset tracker—ideal for outdoor excursions.
Customizable Watch Faces
Choose from 100+ watch faces or upload your own photo to personalize your smartwatch to match your style or adventure.
FSA/HSA Eligible
Your Amazfit purchase may qualify for HSA or FSA reimbursement. You can submit your Best Buy confirmation email to your HSA or FSA provider as proof of purchase.
- Screen Size48 millimetersTouch ScreenYesOperating System CompatibilityAndroid, Apple iOSOperating SystemZepp OSApp CompatibleYesBuilt-in Storage26 gigabytes
Reviews
Rating 4.9 out of 5 stars with 14 reviews
- Battery Life (6)
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
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The Amazfit T-Rex 3 tactical smart watch is designed for the adventurous individual seeking durability and versatility in their smartwatch. This smartwatch for men and women combines ruggedness with advanced technology, making it an ideal choice for outdoor enthusiasts. With a 48mm military-grade build, it resists extreme temperatures from 158°F to -22°F and is water-resistant up to 328 feet, perfect for surfing and freediving. This Amazfit watch boasts an impressive 27-day battery life, providing reliability even on extended expeditions. Its vibrant AMOLED display reaches peak brightness of 2,000 nits, allowing you to view maps and workout data clearly, even in bright sunlight or challenging conditions. As a GPS watch, it provides dual-band positioning with six satellite systems, ensuring precise tracking for your adventures. The Amazfit T-Rex 3 not only serves as a GPS watch but also includes health monitoring features, such as a heart monitor watch and a smart watch blood pressure monitor, keeping you informed of your biometric data. Stay connected with its capabilities as a smartwatch that can call and text, offering seamless communication. It is one of the premier smart watches for men and women, Android compatible, catering to those with dynamic lifestyles. Plus, with over 170 workout modes and AI training plans, this health tracker watch supports enduring fitness pursuits. Whether you seek a smartwatch for women or men smart watches, the Amazfit T-Rex 3 caters to a wide array of users, providing an extensive suite of functions and an authoritative design for any adventurer.
Whether you are pushing your limits on a rugged trail, diving beneath the surface, or training for your next big race, the T-Rex 3 Pro is built for those who train without compromise. Crafted with tough, premium materials, it is made to withstand the harshest conditions while delivering precise tracking and performance insights. With all-day comfort and exceptional battery life, it keeps you connected to your goals and in control of every moment - no matter where your adventure takes you.
Engineered as a premium multi-sport training partner, the Amazfit Balance 2 empowers driven professionals and athletes to push their limits across every discipline, from running and strength training to golf, scuba diving, and beyond. Combining elite fitness tracking, intelligent wellness insights, and next-level versatility, Balance 2 is built to optimize performance, recovery, and everyday life. With its sleek, durable design and powerful ecosystem integration, it adapts seamlessly to every goal, helping users train smarter, recover better, and come back even stronger tomorrow.
Instinct 3 is the rugged 45 mm GPS smartwatch with a 0.9” display, built-in flashlight and unlimited battery life in smartwatch mode with solar charging (assumes all-day wear with 3 hours per day outside in 50,000 lux conditions). With bolted construction, a metal-reinforced bezel and scratch-resistant lens, it can take on your toughest adventures. It’s engineered to MIL-STD-810 standards for thermal and shock resistance and is also 10 ATM water-rated. To keep you on track, the Instinct 3 smartwatch includes a built-in 3-axis compass and barometric altimeter. Plus, multi-band GPS with SatIQ technology delivers superior positioning while also optimizing battery life. Its 24/7 health and wellness features keep you connected to your body with heart rate tracking, advanced sleep monitoring, Pulse Ox and more (this is not a medical device, and data presented is intended to be a close estimation of metrics tracked; Pulse Ox not available in all countries). Instinct 3 also includes Garmin Pay contactless payments (with a supported bank).
| Pros for Amazfit - T-Rex 3 Smartwatch 48mm Silicone - Black - (2025) | |||
|---|---|---|---|
| Battery Life | There were no pros for this product— | Battery Life, Overall Performance, GPS Accuracy, Comfort, Design | Battery Life, Overall Performance, Features, Solar Charging, Flashlight |
| Cons for Amazfit - T-Rex 3 Smartwatch 48mm Silicone - Black - (2025) | |||
| There were no cons for this product— | There were no cons for this product— | Band Quality | User Interface |
Specs
Can the battery be replaced? The specs say "no," and also state that the battery has an unspecified limit on the number of times it can be recharged. This implies the watch is essentially worthless after an unspecified number of battery recharges.
Answered by AmazfitHi PrairieDweller, no unfortunately the battery is not replaceable. Our watches are rated to last around 3-5 years depending on use. Michael | Amazfit Support
Can you take/make calls through Bluetooth on this watch?
Answered by AmazfitHi DaveM, no you are not able to take/make calls through Bluetooth on the T-Rex 3. Please refer to the T-Rex 3 Pro version for this feature. Michael | Amazfit Support
Information on webpage is so confusing, Title is for amazfit T-rex first version 2020, but details of product is showing amazfit T-rex 3 but model number is T-rex first version. somebody please fix it.
Answered by AmazfitHi Marcus, thank you for leeting us know. We have already notified BestBuy on it and it is in the process of getting corrected. Michael | Amazfit Support
Does this smartwatch monitor blood oxygen?
Yes, this smartwatch measures blood oxygen levels.
This question and answer was generated by AI based on customer and product data.Does this smartwatch have GPS?
Yes, this smartwatch is GPS enabled.
This question and answer was generated by AI based on customer and product data.
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