describe:1. The neck can be strained by poor posture while sleeping, neck twitching during exercise, and poor posture (whether leaning on a computer or hunched over a workbench). This cordless neck massager is a way to achieve deep cervical spine relaxation. Regular massage may be most beneficial.2. Portable wireless neck massager: This smart neck massager uses a 4-point fixed heating design and smart 3D floating electrodes to emit current with minimum intensity to improve the massage effect. The electric pad sends electrical waves into your neck, creating a sensation that really helps deep tissue. You can enjoy massage anytime and anywhere.3. Humanized design, adapts to the human neck curve, has constant temperature heating function, and has better massage effect4.4 massage heads provide comfortable massage. Tightly covers the muscles around the cervical spine and painful areas throughout the body.5.5. After-sales service - We have a professional after-sales team. No matter what the problem is, we will help you solve it as soon as possible.Specification:Instructions:1 Press and hold the power button for 2 seconds to turn the machine on and off2. This product has a heating function, which will heat the neck and promote blood circulation in the neck while massaging.3. Short press the + key to increase intensity. There are 15 gears in total, set to one gear on startup.4. Low frequency, relieves neck pain, convenient, light and portable, automatically shuts down after 15 minutes of working5. The product adopts telescopic strong arm technology and has good resilience.Size: 6.3*5.9 inches (16*15cm)include:1 X Neck Massager1xUSB