z18 smart wristband support heart rate blood pressure oxygen monitoring ladies band for android ios smart watch bracelet

screen size: 0.49 inches battery capacity: 60 mah the input voltage: dc 5v charging time: 1.5 hours use time: 3 to 5 days standby time: 7 days waterproof level: ip67,can&'t swimming and shower compatible platforms: android4.4 or above, ios8.0 and above, and bluetooth 4.0 functions: time, date, step, cholesterol, heart rate, blood oxygen and blood pressure measurement, the sleep monitoring, phone calls reminding, sms alerts product size: 51 * 24 * 13 mm strap length: 22 cm watchband: 10 mm