Description Everyone from professional athletes to recreational gym-goers to those with chronic pain love this powerful massager for many reasons: Percussive therapy can help muscles recover faster, reduce muscle pain and lactic acid build-up, improve range of motion and flexibility, encourage blood flow and more. Features - Color: Black.- Material: ABS and PP.- Size: 21.00 x 7.50 x 6.00cm/ 8.25 x 2.95 x 2.36 inch.- Battery voltage: 7.4v.- Charging voltage: 5v.- Motor velocity: 3500 rpm.- Gear strength: 3 gears adjustment.- Battery mA: 1800MA.- Charging time: 1.5 hours.- Use time: 1 hour.- With a battery that can last up to six hours, and six removable heads.- From increasing blood flow prior to a workout, to helping reset muscles for the next round of reps, to releasing lactic acid when your workout is complete, this percussion massager helps ensure that you get as much as possible out of every session.- Less weight, less noise, fits ergonomically in your hand, and boasts 45db of noise reduction for smooth, quiet operation.- Whether its a ball designed to loosen entire muscle groups at a time, a precise point to go deep into muscle to get that one lingering pain, a flatter shape to promote muscle elasticity, or anything in between, one of the six included attachments is going to be perfect for your needs.- With its long battery life and handy carrying case, goes where you go.