Specification: Condition:100 Brand New Item Type: Handheld Sleeping Aid Material: ABS The Efficacy of the Three Modes: Relaxation Mode: Improve Sleep Speed and Sleep Quality. Active Mode: Increase the Enthusiasm for Study and Work, Invigorate the Spirit when You Are Sleepy. Hand Care Mode: Eliminate Palm Fatigue and Soreness, Relax the Mood, and Remove Fatigue. Power Supply Mode: 1 AAA Battery (No Battery Included) Package List: 1 x Handheld Sleeping Aid 1 x Instruction Book 1 x Sling Note: 1. It is forbidden to use it with professional electrical appliances implanted in the body, such as a pacemaker, which may cause equipment failure or trigger danger. 2. Do not use this product if you have skin problems such as palm wounds, eczema, blisters, peeling, etc. 3. Do not use this product in places with high humidity such as bathrooms. 4. Do not use this product for other purposes than its intended purpose. 5. Do not disassemble, repair or modify this product privately. It may cause equipment failure or cause injury. 6. Do not give this product to children under six to avoid personal injury. 7. Before discarding the appliance, the battery must be removed from the appliance. When removing the battery, the appliance must be powered off, and the battery should be disposed of safely. INDICATIONS That's it!Comfortable touch: Made of high-quality ABS material, it is comfortable to the touch, has a long battery life, and the sleep aid is stable and durable, and can be used for a long time. Operation method: Hold the product in the palm of your hand (recommended for use with your left hand), long press M to activate the machine, then short press M to switch modes, and " " "-" to adjust the gear. After adjusting to the relaxation mode, you can easily enter the sleep state. Sleep use: The handheld sleep aid comes with a sling, which is convenient for carrying the storage box. Put the sling on your wrist when you sleep to fix the sleeper and give you a good night's sleep. Efficacy: The main needles of the hand-held sleep instrument have the following effects, improving sleepiness and light sleep, optimizing sleep quality, enjoying relaxation, and saying goodbye to sleep disorders. Working principle: The handheld sleep aid is specially designed to improve your sleep quality. Intermittently release micro-currents to soothe nerves, which not only improves sleep quality, but also relieves palm fatigue and soreness.