Features:1. excellent endurance: 12V smart battery management system uses 12V 2000mAh power battery, the crotch can be used for 3 hours in 1.5 hours of charging each time. The built-in preure-inductance feedback system can adjust the motor output according to the preure.2.Intelligent technology is light and low noise: multi-acoustic materials absorb vibration aerodynamic noise reduction, with brushle motor double bearing rotating structure, blooming strong power, while significantly reducing noise.3. High aponeurosis gun: mallet relieves fatigue after exercise, unblocked meridians and alleviates muscle stiffne and sorene Specification Working Hour: 2-6 Hours Maager No-load Speed: 3200r/min 3 Levels Adjustment: Level 1 - 1900/min,Level 2 - 2500/min, Level 3 - 3300r/min Product Size - 18.8cm*24.2cm*6.2cm Night Weight: 1010g material: ABS Size:35*24.5*11cm Input voltage: 100-240v; 30-50HZ Detachment type: DC, 12.6V=1V plug:US,AU,EU,UK color: Black, silver, red,carbon fiber, BlueYellowPink,Dark red Input voltage: 100-240v; 30-50HZ Detachment type: DC, 12.6V=1V plug:US,AU,EU,UK color: Black, silver, red,carbon fiber, BlueYellowPink,Dark red Working Hour: 2-6 Hours Maager No-load Speed: 3200r/min 3 Levels Adjustment: Level 1 - 1900/min,Level 2 - 2500/min, Level 3 - 3300r/min Product Size - 18.8cm*24.2cm*6.2cm Night Weight: 1010g Note:1. Please allow slight error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package Included: 1 * Muscle maager 4 * maager head 1 * Carry bag 1 * Charger 1 * User manual