Function:7 Modes Vibration/MemoryMaterial:SiliconeColor:BlackPower:USB ChargingCharging Time:60 minutesBattery Life:40 minutesFurther:IPX5 WaterproofProduct Size:95x48mm/3.62x1.89 inchesInner Ring Size:32mm/1.26 inchesPacking Size:140x80x45mm/5.51x3.15x1.77 inchesPacking:Color BoxPackaged...