FENLI’s rechargeable neck and shoulder massager combines high-torque motor performance with cutting-edge lithium battery management technology. Engineered with a premium 2500mAh lithium-ion battery pack and a smart Battery Management System (BMS), the device regulates power output efficiently to ensure constant kneading force even as battery levels deplete. Advanced USB-C fast charging circuits recharge the massager fully within two hours, offering maximum user convenience. Built around a flexible, ultra-lightweight ergonomic frame, the unit incorporates high-efficiency copper motors and dual thermal elements without adding unnecessary bulk. FENLI manufactures certified rechargeable massagers complying with UN38.3, MSDS, CE, and FCC international standards, providing global wholesale buyers with safe, reliable cordless products ready for global shipping.