3 in 1: It integrates the three functions of negative pressure cupping, scraping and massage. Intelligent detection of the pressure in the tank, the vacuum negative pressure can be adjusted in real time to realize dynamic breathing cupping. 12 level negative pressure, strong and stable suction, no open flame; 12 level red light heating, deep massage, relax the body, and dispel fatigue. Two Modes (Deep negative pressure / Soothing breathing ) are available, scraping, cupping or massage, free to choose without restriction. (The deep negative pressure is turned on when the machine is turned on) 20min Timer Function: Automatically start a 20 minute countdown when it is turned on to avoid unnecessary damage to the body caused by excessive scraping and cupping. Type-C USB Charging: rechargeable, built-in 2000mah lithium battery Specification: Material: ABS Plastic Input voltage: 3.7V Rated power: 5W Type-C USB Charging Built-in 2000mah lithium battery Size Chart: Dia: 94mm/3.70inch Height: 78mm/3.07inch Package Includes: 2 Piece Intelligent Cupping Massage Device 2 Piece Charging Cable (Type-C) 2 Piece Instruction Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!