Features 4 Massage Heads: Our 4-Head massager has 4 massage heads, which can massage a large area and relax muscles. It is suitable for large muscle groups, such as back, neck, shoulder muscles. Professional Massage: Our 4 head electric neck massager can provide powerful percussion depth, effectively relieve muscle fatigue and pain, and is very suitable for muscle massage on the back, neck, legs, and hands. Mutes Gentle Massage: The muscle massage device is used almost without no noisy, ensuring that you will not only use it at home without disturb your families, but also do not bother others when you are using the portable massage machine at the gym or office. For all person: Whether you are an office workers, athlete, or bodybuilder, our muscle can be used as a for Back/Shoulder/Neck/ Body Muscle Ideal Present Idea: Our massage machine is ergonomically designed and easy to carry. It is an ideal gift for sedentary office workers or athletes, and can help them massage their back, neck, and leg muscles. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Size: 300*162*150mm Battery: 2000mah Intensitys control: 5 speed Charging time: about 2 hours Use time: 100-120 minutes Package List: 1x Rechargeable 4 Head Smart Back Massager