1. USB Rechargeable design. With built-in 600mAh lithium battery, it can be continuously used for 5 days (2 times daily, 15 minutes each time)after it is fully charged for 3~4 hours. More convenient to use. 2. Equipped with 2pcs of health massage pastes, which can be apply to any body like back, leg, shoulder etc. 3. Simple operation. With remote controller featuring with backlight, easy for you to operate and control the device. 4. 16 kind of electric pulse speed, 3 kind of vibration speed, low and high heat degree, 6 kind of electric pulse modes and 6 kind of vibration modes are available, you can adjust it according to your need. 5. Multifunctional. Gather vibrate massage, electric pulse massage, heating, this neck therapy instrument is designed for people who have neck pain, shoulder numbness, dizziness which caused by cervical spondylosis. Use it 30 minutes per day, you can feel more relax and become more healthy.