Product details of Portable mini massager deep tissue Therapy to relieve muscle soreness, used for athletes, percussion muscle massager and back massager Product details of Portable mini massager deep tissue Therapy to relieve muscle soreness, used for athletes, percussion muscle massager and back massager Product Type: 4 in 1 Mini massage gun Applicable in all Body Variable speed lavel Smooth and Noiseless operation Automation transmission with USB rechargeable system Function: timing control Color: Multi color and random color selection (black/green/red/ silver) Battery Capacity: 2500mah Size: 17.4cmx14cmx4.8cm Material: ABS Working time: 3-4 hours depending us speed control Pls see all indications on box and manuel before use Pls recharge -5-7 hours before first time use Authentic Product