The Pulseroll 4 Speed Vibrating Single Ball is a great self-use deep tissue massager which fits perfectly in the palm of oyur hand, making it extremely easy to use and is ideal for physiotherapy, muscle recovery, and pain relief. It is also ideal to use on the glutes and amazing when used under the feet; helping those suffering with plantar fasciitis. Coming with 4 vibrating speed settings, making it ideal for warm ups, cooling down and more. Also coming with a rechargeable battery in which to charge the battery fully, the charging time will take approximately 3 hours. When fully charged it can last up to 6 hours ( depends on power level ). The vibrating single ball comes with a remote control to allow for a much smoother process when changing the vibration speed when the ball is in use.