Description:Bracelet type, more convenient while you are doing sports.Data synchronization does not require cable.Function : blood monitoring, heart ate monitoring, sleep monitoring.Time/date display, pedometer, calorie, distance display/caller reminder, SMS, QQ, micro message content push,remote taking photo.IP68 waterproof : designed with soft silicone TPU and TPE watch strap, the bracelet chip can effectively prevent against the harm to your wristband by of sweating or water.Specification:Material:PlasticSize Chart:Size:Approx.3.1x2.8x0.4cm/1.2x1.1x0.2inchPackage Includes:1 Set smart watchNote:All dimensions are measured by hand, there may be small deviations.Color may vary slightly due to the color setting of each individual monitor.Thanks for your understanding.Please enjoy your happy shopping time!