Electric Headache & Migraine Relief Head Massager

Electric Headache & Migraine Relief Head Massager Material: ABS elastic band Output Interface: Standard V8 interface Power Mode: USB 3 Massage Modes: Yes Charging Input Voltage: 5.0±0.2V Charge Time: 1-2 hours Internal Battery Size: 200mhA Size: 19.5 x 10.5 x 5.5cm Strong Functions: Yes Lightweight and Portable: Yes