Active 3 | AMOLED | 3.35 cm (1.32") | Brightness 3000 cd/m² | Display type Digital | Display resolution 466 x 466 pixels | Touchscreen Yes | Watch glass type Sapphire | Band material Silicone | Shape Round | Market positioning Smartwatch | Watch case colour Gold | Watch case material Aluminium,Stainless steel | Band colour Black | Heart rate monitor Yes | Near Field Communication (NFC) Yes | Bluetooth version 5.3 | Battery type Built-in battery | Battery capacity 365 mAh | Battery life 12 day(s) | Charging time 2 h | Weight 38 g

T-Rex Ultra 2 | AMOLED | 129.5 cm (51") | Brightness 3000 cd/m² | Display type Digital | Display resolution 480 x 480 pixels | Touchscreen Yes | Watch glass type Sapphire | Operating system installed Zepp OS | Band material Silicone | Band size One Size | Shape Round | Market positioning Sport watch | Watch case size 51 mm | Watch case colour Titanium | Watch case material Titanium,Glass Fiber Reinforced Polymer (GFRP) | Band colour Black/Brown | Heart rate monitor Yes | Near Field Communication (NFC) Yes | Wi-Fi Yes | Bluetooth version 5.2 | Battery type Built-in battery | Battery capacity 870 mAh | Battery life 30 day(s) | Weight 89.2 g