This item was received as a gift, so I opened it and turned it on. Since then, it has not been used at all, so it is essentially a new, unused item for those who understand. Please take a close look at the photos before purchasing. Thank you. Power: Rechargeable (Built-in lithium-ion battery 7.4V 1100mAh) Charging time: Approximately 3 hours Number of charging cycles: Approximately 300 times Vibration frequency: Mode 1: Approximately 2,500 times/min Mode 2: Approximately 3,000 times/min Mode 3: Approximately 3,500 times/min EMS frequency: Approximately 15Hz Timer: Approximately 7 minutes Dimensions: Approximately W100mm x H130mm x D38.5mm (main unit only) Weight: Approximately 230g Main unit material: ABS, silicone Attachment material: ABS, silicone Accessories: Point/Wide/Ball attachments, USB cord (TYPE-C (A-C)), Instruction manual Compatible AC adapter: Rated output: Use DC5.0V 2.0A or higher (※PPS compatible USB adapters cannot be used)