Type:Anti Snore Wrist Watch Work Mode:Auto Number of Pieces:One Unit Material:plastic Pressure Range:4-20 cmH2O Model Number:Anti Snoring Device Wristband Watch Item Type:Sleep & Snoring Smart Snore Stopper Stop Snoring Biosensor Infrared Ray Detects Anti Snoring Device Wristband Watch Sleeping Aid Features: 1. Compact: Watch appearance and Electronic acupuncture. 2. Automatic: Automatic work and easy to operate. 3. Unique designed: Unique designed biosensor for automatically detects snoring. 4. Principle: Utilizes the body / 's natural biofeedback mechanism by stimulating the nerves in the wrist area. 5. Function: Improve sleep quallity. Description: Nerve stimulation trains the user to reflexively reduce snore frequency and volume Users experience no harmful side-effects, non-invasive method. Specifications: Material: plastic Color: black SIZE: 47 * 41 * 31mm Package included: 1 x Anti Snoring Device Notes: 1. Please allow 1-3cm measure error. 2. The color of the actual items may slightly vary from the above images due to different computer screen, thanks for your understanding.