M4 Smart Bracelet - Black

Main Features • Material, front case: PC, back case: ABS + PC • Wristband: eco-friendly TPE • HD 0.96 inch color screen • Message sync with cellphone • Heart rate monitor, blood pressure and blood oxygen monitor, sleep monitor • Environmental comfort TPE band • Palming bright screen • Stand by: up to 30 days • Operation: 5 - 10 days