This portable muscle stimulator uses micro-current pulses to relieve muscle discomfort and physical fatigue, improving muscle performance and promoting blood circulation. With 6 stimulation modes and 15 intensity levels, it can target pain and tension in the neck, cervical spine, shoulders, back, arms, and legs. Small and easy to use, either via USB charging or with 2 AAA batteries, it's perfect for home, office, and travel use. Features: 1. Using bionic micro-current pulse simulation technology, it provides micro-electric pulse massage, promotes blood circulation, improves muscle performances, effectively relieves muscle discomfort and physical fatigue, and has a soothing effect. 2. Built-in 6 stimulation modes and 15 intensity levels for multi-function massage and custom adjustment, you can easily operate with one-key control. 3. Small size design, can be flexibly pasted on different parts of the body, easy to carry, suitable for use at home, office and travel. 4. Support USB charging / 2 x AAA battery powered (not included), continuous enjoyment, no need to replace the battery, easy to use. 5. Suitable for people who have pressure and pain in the neck, cervical spine, shoulders, back, arms, legs, etc. Specification: Material: PU Product Color: Blue, Black, White, Silver, Product Size: 14 x 8 x 2cm Product Weight: 200g Package Included: 1 x EMS Cervical Massage Sticker