About this item 42 HOT COMPRESS: 42 is the most comfortable warm temperature recommended for the neck. The advanced sensor built into the Cervical Massager can precisely control the temperature range to prevent excessive heat. Its like putting a warm hot towel around your neck, the heat penetrate the skin of the neck layer by layer. TENS PULSE MASSAGE: Neck Massager relief can neck pain and stiff neck fast and effective using TENS pulse for deep tissue massage. Penetrate into the skin 3-5cm, dredge the pain points and relieve cervical pain. Noise reduction design, 0-20db, does not affect daily work and life. MULTIPLE MODES & LEVELS: This neck massager has 3 massage modes with 15 levels intensities are designed for relaxing neck muscles as well as improving sub-health status, you can combine them to meet different needs. 3D U-SHAPED DESIGN: This Cervical Vertebra Massager Comes Ergonomic U-design with 2 Stainless Steel Attaching Veneers, 3D Intelligence Fitting Technology, Ensuring Closer and Larger Contact, Increasing Comfort Level with Adjustable Electrode. SMART NECK MASSAGER: Innovative Smart electronic neck massage, intelligent cordless remote control. Automatic power off after 15 minutes by default, more humanized To help relieve neck soreness, shoulder tiredness, body tension, improve sleep quality and promote blood circulation.