Features: Self-Training: You can exercise your muscles in the office, bedroom, or wherever you want, not just at the gym. Adjustable: With six different massage methods and ten strength modes, it can be adjusted to suit different needs. Low-Frequency Therapy: It helps muscles increase flexibility, fullness, and better fitness. Ergonomic Design: The soft design of the patch fits perfectly to the skin, the pad is odorless and does not harm the skin. Easy to Use: Just attach it to your body every day, and you can easily achieve your fitness goals, convenient and practical. Material: PU, ABS Battery: 3.7V, 220mAh battery Working Voltage: DC 3.3V Charging Voltage: DC 5V Abdominal Patch: Approx. 650 * 170mm / 25.6 * 6.7in Arm Patch: Approx. 190 * 60mm / 7.5 * 2.4in Charging Method: 3-in-1 USB cable Working Modes: 6 massage methods and 10 strength modes Package Includes: Abdominal Stickers*1 Arm Sticker *2 3-in-1 USB Charging Cable*1 Host*3