<p>Features:<br>High frequency vibration reduces fatigue, deep massage relaxes muscles and relieves pain.<br>Four massage heads that activate muscles, greatly reduce muscle recovery time, relieve pain, and relax from head to toe.<br><br>Specification:<br>Size: about 24*24.5*51mm/9.45*9.64*2.01in<br>Application: running, fitness equipment, sports trends, fitness and body, health massage<br>Amplitude: about 12mm/0.47in<br>Gear position: 1-20 files<br>Speed: 1200-3300r/min<br>Charging voltage: 110-240V<br>Battery: rechargeable lithium battery 24V 2400mAh<br>Use time: 5-6 hours<br>Charging time: 2 hours<br>Display: LCD digital display<br><br>Packing List:<br>1 * Muscle Massager<br>4 * Replaceable Massage Head<br>1 * Charger<br>1 * Instruction Manual<br>1 * Storage Box</p>