Specifications:Net Weight: 400gVoltage :18.4VCharger type : USBSwitch way: Power switchBattery : Rated/Chargeable Li-ionLi-ion Battery Capacity: 2000mAhBattery removal : Not removableBattery charging time : 2-4 hoursMotor speed :3200rpmMotor diameter :46mmWorking Hour: 3-4 Hours MaagerSpeed Adjustment: 4 Level gearsPackage Details:1 X Maage Gun4 X Maage Heads1 X USB Power Charger1 X User ManualFeatures:1.Reduced recovery time2.Increased blood flow3.Clears lactic acid4.Releases muscle knots5.Breaks down scar tiue6.Increased range of motion7.Brushle motor technology brings more stable and comfortable experience.8.Customized ergonomic maage head can provide comfortable maage experience while reducing the damage to bones and collaterals.9.Many kinds of maage head, according to the location of maage to choose maage head, bring a more comprehensive maage experience.10.The device allows the user to directly target areas of sorene and reduce pain, whilst also reducing recovery time, making it an eential product for any athlete.11.Adjust the frequencies according to the purpose, for warming up, sorene relief, injured muscles, muscle pain and activation, tightne relief; increase to higher speeds for larger and stronger muscle groups.