Effective Neck Massager: The electric neck massager use of low-frequency electrical pulse to simulate real human massage, to help release neck soreness, improve sleep quality and promote blood circulation. Multiple Mode: The electric neck massager builds up with heating, 3 vibration patterns,15 intensity settings. you can choose the most suitable mode you need to reduce muscle pain or body tension. The massager is pre-set at 15-minute auto shut-off. Portable and Fashion: With the unique headphone style, this cordless neck massager fits any size of the neck. It's portable designed and lightweight, great for home, office & car use. Comfortable to Wear: Skin-friendly, breathable soft silicone material, no pressure on the neck artery; Ergonomic 3D designed, fits the physiological curve of the neck. Long Battery Life: The built-in 1600 mAh rechargeable lithium battery of this 3D neck massager with a standard Micro USB connector effectively prevents overcharge and over.