Although unused, it has been opened for inspection and confirmed to charge. HUAWEI Band 4 - Model: ADS-B29 - Color: Amber Sunrise - Accessories: Warranty Screen Size: 0.96 inches Display Resolution: 160x80 Display: TFT color screen Operating Time: Approximately 9 days Power: Rechargeable Battery Capacity: 91 mAh Band/Belt Material: Silicone rubber <Uses> Running Cycling Elliptical Rowing Walking <Measurement Functions> Heart rate sensor Calorie consumption Sleep Distance traveled Step counter function Sensors Equipped Acceleration sensor Call/Notification Functions Incoming call notification: ○ Email notification: ○ Network: Bluetooth Bluetooth 4.2 BLE Size Band body: Approximately 56mm (total length) x approximately 18.5mm (width) x approximately 12.5mm (thickness) Strap: Approximately 17mm (width) x 123mm + 85mm (length) Weight: 12 g Thank you for viewing.