True to its name, the Amazfit Ultra stands as Amazfit's top-tier product, offering an array of features for outdoor sports and adventurous activities enthusiasts.

Similarly, the T-Rex Ultra maintains its 1.39-inch AMOLED display with a resolution of 454 x 454 pixels and a maximum brightness of 1,000 nits.
Notably, the T-Rex Ultra's casing is reinforced for enhanced durability, crafted from 89 grams of stainless steel, measuring 13.45mm in thickness. Moreover, the device is certified to meet EN13319 and ISO 6245 standards, ensuring it can withstand depths of up to 30 meters.
Additionally, the T-Rex Ultra adheres to MIL-STD standards for 15 rigorous environmental tests, resistant to mud, dust, and sand ingress. Furthermore, this smartwatch performs well in extreme temperatures ranging from -30°C to +70°C.

The T-Rex Ultra comes equipped with dual-band GPS, supporting offline map downloads that can track user movements in real-time. Additionally, it features integrated motion recognition for up to 25 GYM exercises, along with the BioTracker PPG biometric sensor for accurate and detailed heart rate and blood oxygen monitoring.
In terms of connectivity, the T-Rex Ultra utilizes Bluetooth 5.0 LE standard paired through the Zepp OS 2.0 app, along with Wi-Fi, allowing seamless connection to the GoPro app.

The T-Rex Ultra boasts a 500mAh battery capacity with magnetic charging pins, providing up to 20 days of continuous usage under normal conditions and 9 days under heavy usage. Notably, the Endurance GPS mode can extend battery life up to 3 days when GPS is enabled.
Regarding color options, the Amazfit T-Rex Ultra offers fewer choices than the T-Rex 2, with only two colors available: black and desert gold, priced at $400 (approximately 9,200,000 VND).
