Balance 2 | AMOLED | 3.81 cm (1.5") | Brightness 2000 cd/m² | Display type Digital | Display resolution 480 x 480 pixels | Touchscreen Yes | Watch glass type Sapphire | RAM capacity 3 MB | Band material Silicone | Band size M | Shape Round | Market positioning Smartwatch | Watch case colour Grey | Watch case material Aluminium,Glass Fiber Reinforced Polymer (GFRP) | Band colour Black | Heart rate monitor Yes | Near Field Communication (NFC) Yes | Wi-Fi Yes | Bluetooth version 5.2 | Battery type Built-in battery | Battery capacity 668 mAh | Battery life 21 day(s) | Charging time 2 h | Weight 43 g