Function:10 Modes VibrationMaterial:ABS+SiliconeColor:Dark BluePower:1xAAA BatteryRing 1:28-38mm/1.1-1.5 inchesRing 2:28-38mm1.1-1.5 inchesRing 3:38-48mm/1.5-1.9 inchesProduct Size:109x115mm/4.29x4.52 inchesPacking Size:210x110x70mm/8.27x4.33x2.76 inchesPackaged Weight:0.4kg