Function: 1. This massage cushion massages according to ergonomics, which can relieve fatigue effectively. 2. The EMS pulse goes deep into the cortex and stimulates the nerve lines beneath the cortex to relax the muscles, contract the muscles and rebuild the muscles. 3. Low frequency EMS pulses relax tense muscle groups and soothe soreness. 4. 15 minutes automatic countdown and double overheating protection. 5. There are 6 modes and 9 levels of strengths to meet the different needs of different groups of people. Specification: Item Type: EMS Foot Massager Voltage: 3.7V Frequency: 1-100 Hz Working time: 15 min Host battery: built-in battery, 180mAh lithium battery Features: bioelectric massage, portable storage, smart acupuncture point capture, button adjustment, EMS technology, hand feel simulation, shutdown protection, simple operation, long-lasting battery life EMS applications: muscle strengthening, preventing muscle atrophy, relaxing muscles, relieving pain, relaxing muscles, beauty and muscle condition 6 modes: massage, kneading, scraping, elbow pressure, acupuncture, cupping 9 levels of strength Package list: 1 x footrest 1 x host 1 x remote control 1 x USB data cable 1 x electrode patch 1 x electrode connection cable To use the massage, the skin of the feet must be in contact with the massager (remove socks) to be effective.