Effective Deep Tissue Massage: Reaches tissue as deep as 15mm, with powerful percussion up to 3200rpm, and 44lb stall force to relieve muscle stiffness on different body parts – perfect for athletes and bodybuildersUpgraded High-Torque Motor: Adopts a high-torque brushless motor and high-quality bearing that provides efficient, consistent percussion with a durable and long service lifeSafe Muscle Relaxation: Employs an IC chip to auto-shut off the massage gun after 15mins of use for optimal muscle relaxation; switches to standby mode for overdischarge protection when kept idle for 3minsIntegrated 3C-Rated Battery: Built-in 2600mAh battery for lengthy use of up to 10hrs on one full charge, holds power for up to half a month if used 15mins per day, easy to check remaining battery via LED indicationLightweight & Portable: Massage gun weighs only 1.6lbs and comes with a PU storage bag, easy to carry any place for on-demand relaxation with 20 speed levels and 6 detachable massage heads