Feature: 1. Ergonomic Handle: Our handheld massage hammer features an extendable handle and ergonomically designed 120° curved design, seamlessly fitting the physiological curvature of the spine. It can easily relax your back/neck/shoulder/waist/legs/arms and other hard to get areas without assistance. 2. Ultra Quie Powerful Motor: Equipped with a powerful brushless motor, this massager provides up to 20 hours of usage time. It offers a quiet and relaxing massage experience at less than 45dB, ensuring minimal disturbance even during phone calls or watching TV. 3. Long Usage Time: The back massager can be quickly charged within 90 minutes via USB Type C cable or power bank. Enjoy an unparalleled 15 minute massage for up to 15 days with our handheld massage gun. 4. 6 Speed Levels: Customize your massage experience with 6 speed settings. Interchange the 4 unique massage heads of the deep tissue massage gun to target different body parts, muscles, and tense areas for relaxation. 5. Lightweight and Portable: Lightweight design, this electric massage hammer provides the best massage experience whether at home, gym, or office. Ideal gift choice for professional athletes, fitness enthusiasts, seniors, housewives, and more. Specification: Item Type: Massage Gun with Extension Handle Material: ABS Battery Type: Lithium ion Battery Battery Capacity: 2000mAh (Shipped with Built in Battery) Rated Power: 17W Rated Current: 2A Maximum Speed: 3200r/min . Package List: 1 x Massage Gun with Extension Handle 1 x USB Cable 1 x User Manual 3 x Replacement Heads