The Wahl Deep Tissue Cordless Percussion Massager is ergonomically designed with a rubberised grip and long handle, making it a comfortable and ideal tool for percussion therapy*. The deep tissue percussion movements target stress and tension to ease muscle soreness and discomfort at home or in the gym. Ideal for neck, shoulders, upper back, lower back, hamstrings, calves and feet. The variable speed setting adjusts the intensity from very gentle and relaxing to intense (up to 3300 percussions per minute) and soothing for comforting deep tissue penetration. This percussive massager is also very quiet at 7o decibels. The Lithium Ion technology allows 200 minutes cordless run time, so you can enjoy a massage without the hassle of a cord getting in the way. *Percussion therapy concentrates targeted pulses of pressure into the muscle / tissue of the body, helping to relieve muscle pain, stiffness and soreness (delayed onset muscle soreness aka DOMs), and increase range of motion. Wahl invented the first practical hand held vibrator massager for medical applications in 1911 and have 26 massager patents with the first dating back to 1915. Wahl have continued to manufacture innovative massagers through the years offering unique, customised attachments making them suitable for varied applications.