1、The massager adopts a rechargeable main unit, and the system default massage time is 20 minutes, and the massage time can be adjusted for 10‑60 minutes. 2、Using the physical massage principle of electronic acupuncture, using low frequency pulses to imitate the 16 basic techniques of acupuncture massage. 3、20 levels of strength adjustment, 4 channel output interface, can independently adjust different massage methods and massage intensity. 4、Rechargeable battery, it can be used continuously for 4‑6 hours after charging. 2 charging methods, AC adapter or USB cable charging. 5、Dual output, 4 output ports, separate output. When used by multiple people, the massage mode and strength can be adjusted individually. Item Type: Massager Material: ABS Power Supply Mode: Lithium Battery Battery Capacity: 300mAh Working Principle: The Rechargeable Pulse Massager Adopts the Physical Massage Principle of Electronic Acupuncture and Uses Low-frequency Pulses to Imitate the 16 Basic Techniques of Acupuncture Massage. Use Range: (1) This Product is Mainly Used for Home Electronic Health Massage to Prevent the Sub health State of Family Members (2) the Scope of Use of This Product: Homes, Business Gifts, Shops, Hotels, Offices, etc. 1 x Host 4 x Electrode Wire 8 x Electrode Sheet 1 x Power Cord 1 x Plug 1 x Manual 1 x Acupoint Map 1 x Winding Board Ship with built in battery