T-Rex Ultra | Screen 1.39″ | Display technology AMOLED | Resolution 454 x 454 | Wireless connections WLAN/Bluetooth | Memory 2.3GB for music | Material Silicone rubber | GPS | Material housing Stainless steel | Battery capacity 500 mAh | Operating System Zepp OS | Dimensions 47.3×47.3×13.45mm | Weight 0.089 kg