Professional and powerful: The massage gun has high frequency vibration stimulation with 6 adjustable speeds, can reach a strong force to loosen tight muscles, release lactic acid and relieve muscle pain. Quiet massage: Equipped with an improved 24V brushless motor with high torque and optimal efficiency and low noise level, the percussion massager can reach up to 3600 percussions per minute within seconds while only 35 dB-50 dB without disturbing others. Long battery life: The massage gun is built in a 3C certified 2200 mAh battery and lasts up to 4 hours. The massage gun will automatically shut off after 15 minutes use, to extend battery life and keep you safe. Portable design: Weighs only 1kg, so you can easily hold the massage gun with one hand and carry it at home or office, gym. Relax and rejuvenate: You can use 4 interchangeable heads to target muscles such as neck, back, shoulders, legs, foot and so on. The neck shoulder massager relieves and rejuvenates your body after long periods of sitting or strenuous workouts.