Product Information Product Name: EMS Mini Massager Working time: 15 minutes/time Working current: 9.8mA Working voltage/frequency: lithium battery 3.7V/1-100Hz Package included: massage paste x1/manual x1/host x1/USB charging cable x1 * Portable Mini Massage Device: Apply the self-adhesive device to your desired body areas for targeted relief. Relieves muscle pain and discomfort, activates muscle tension. Eliminates flabby arms and underarm fat, great for lymphatic drainage, boosts blood circulation, and more. * Widely used: This mini lymphatic drainage massager, relieve back pain, can also be widely used on different parts of the body. Massage parts: neck, back, waist, buttocks, legs and other parts. Relaxation gift for men and women. * 8 Modes and 18 Levels Adjustable: The neck massager has 8 modes neck massage mode and free combination mode to choose from. Users can use the + / buttons on the device to adjust the level (18 steps) according to personal needs. Enjoy the feeling of a real massage and the effect of relieving fatigue. 20 minutes per use is recommended. * Usb Rechargeable: The mini lymphatic drainage massager can be used about 20 times after only 2 hours of full charge (15-20 minutes for one use). USB charging provides a more stable power supply and a longer service life. * Enjoy Massage Anytime, Anywhere: The neck massager is portable and lightweight, allowing you to move freely. You can take it with you anywhere It can be easily hidden under clothing. A must-have for home and travel. Note Please allow 2-3 cm difference due to manual measurement. Besides different computers display colors differently, the color of the actual item may vary slightly from the below images, thanks for your understanding(1 inch = 2.54 cm)