Feature:1. Vibrate to cause a reflex contraction of the uvula, make the airway fluent, reduce the snoring sound to a stop, effectively prevent apnea, and finally improve snoring through training.2. Design with 11 holes on the wristband, the size of wristband is adjustable, suitable for most people.3. It has an automatic biosensor that stimulates your wrist with gentle electrical pulses, adjusts your mouth, opens your jaw to stop snoring.4. Built‑in lithium battery, USB charging design, easy to charge, long endurance, convenient for use.5. 3 gears of strength are adjustable, you can regulate it according to needs, simple operation.Specification:Condition: Brand NewItem Type: Anti-Snoring WristbandMaterial: ABSBuilt-in battery: lithium battery 80mAhProduct Strength: 3 Level (high, medium and low)Operation Instructions:1. The direction of the anti-snoring deviceThe correct direction of the snoring device: The sound detector (positive "W") should be placed on the top.2. The location of the bracelet1). Adjust the bracelet strap appropriately according to the size of your hand, then fasten the buckle and fix it.Note: Just keep the machine in contact with the skin. Don't get too tight and don't hinder blood circulation.2). Place the machine on the wrist about 2.5 cm (about half the length of the index finger) between the back of the hand and the wrist..Package List:1 x Anti-Snoring Device1 x Silicone Bracelet1 x USB CableNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.