Main material: ABS + medical silicone
Vibration frequency: 2*9 vibration modes
Size: 158mm*45mm*41mm
Battery capacity: lithium battery 3.7V/380mAh
Charging time: 1.5 hours
Working time: 0.5-1 hour
Charging mode: USB charging
Maximum noise: <40 decibels
Waterproof performance: IPX7