Features:<br />Used to relax muscles, relieve stress and improve the circulation.<br />Adopts brushless motor and high-quality bearing for an almost drop-dead silent massage.<br />Interchangeable massage-heads in 8 shapes to target specific muscle groups for faster recovery.<br />Specially designs 22 levels of speed adjustable, you can adjust it according to your need. <br />3200r/min rotation rate brings 10kg impact force, effectively decomposing lactic acid.<br />Equipped with memory function, it would switch to the level that you use last time automatically.<br />Short circuit and overload protection, prompt response of instructions.<br />USB Charging, supports connect to power-adapter, notebook, portable source, ect.<br />Large capacity lithium-battery has long endurance time.<br />Comes with a portable travel case to keep all the parts in perfect order, making it easier to store.<br/>Specifications:<br />Material: ABS &#43; rubber<br />Color: black, green (optional)<br />Rated input: 100-240V, 50/60Hz, 24W<br />Rated output: 8.4V/1A<br />Vibration level: 22 levels <br />Amplitude: 12mm<br />Rotation rate: 1800-3200r/min<br />Endurance time: 3h<br />Power supply: built-in lithium-battery<br />Battery-capacity: D C 7.4V/1800mAh<br />Item size: 230 * 210mm / 9.05 * 8.27in<br />Package size: 350 * 250 * 95mm / 13.78 * 9.84 * 3.74in<br />Package weight: 1437g / 3.17lb<br/>Note: Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures.<br/>Package List:<br />1 * Muscle Massager<br />8 * Replaceable Massage-Heads <br />1 * Charging Cable<br />1 * Storage Case<br />1 * User Manual