The Kayo Pro 2.0 Percussion Massage Gun is a powerful, cordless, rechargeable, & ultra-quiet percussion massager that can be used to target sore muscles,help release lactic acid build-up and ease fascia discomfort. The unit includes 4 different massage heads and a convenient carrying case. This is a our top Percussion massage gun. Level 1 from 1400 r/m to Level 9 3000 r/m. CE, RoHS certification. Idea for after exercise massage.