Features1Relieve Pain: Neck brace helps to relieve neck pain and improves head forward posture through the neck traction, effectively relive muscle soreness. 23 Heating Gears: Neck collar brace provides hot compress for your neck, with 3 gears for you to adjust, which help to better relieve neck pain. 3Perfect Fit: Lift your head up and tilt it slightly while adjusting the neck brace fastener, then gently rest your chin on the support to achieve perfect fitting. 4Tightness Adjust: Neck support brace adopted hook and loop fasteners for easy adjust the tightness, which is suitable for different neck sizes. 5Steel Wire Latex: Neck posture corrector brace is made of high quality steel wire and latex materials, firm and sturdy, which can be used for a long time without damage.SpecificationItem Type: Neck Support BraceMaterial: Latex, steel wireBattery Type: 701737 Lithium Battery(Included) battery capacity: 480mAh How To Use: 1. Press the switch for 1.5 seconds, the purple indicator lights up as a cycle (high temperature for 10 minutes, medium temperature for 20 minutes, low temperature for 10 minutes), and then it will automatically shut down.2. After the cycle gears, press the open key again and the red indicator light will turn on for high gear, press again, the blue indicator light will turn on for mid gear, then press again, the green indicator light will turn on for low gear, and long press to shut down. 3. The neck heating temperature is 60 for high gear, 50 for middle gear and 40 for low gear.Package List1 x Neck Brace 1 x USB Rechargeable 1 x Instruction