Microcurrent Sleep Therapy Device Ear Clip Stimulator for Adults with Adjustable Intensity White Power mode:USB<br> Function:handheld wire control<br> Display mode:LED liquid crystal display<br> Working principle: -current pulse<br> Battery life:more than 12h<br> Built-in battery capacity:1200mAh-2000mAh (inclusive)<br> Product Category:Head Mounted<br> Whether built-in battery:built-in battery<br> Contraindications<br> 1. Do not use with implanted -electrical appliances, such as cardiac pacemakers, It may cause equipment failure or trigger hazards.<br> 2. Do not use this product if you have skin problems such as ear allergies, blisters, peeling, frostbite, etc.<br> 3. Do not use this product in with high humidity such as bathrooms.<br> 4. Do not use this product for purposes other than its intended use.<br> 5. Do not give this product to children under the age of six to avoid personal injury.<br> 6. Do not disassemble, repair or refit this product without authorization. Equipment malfunction or injury may result.<br> 7. Before disposing of the appliance, the battery must be removed from the appliance.<br> 8. When removing the battery, the appliance must be disconnected from the power supply. Batteries should be disposed of safely.<br> Colour:Black<br> Material:ABS<br> Package Contents:<br> 1 Set * Smart Sleep instrument<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.