Product Category: Hand Sleep Instrument Power Mode: Plug-in Whether Built-in Battery: Built-in Battery Function: Wireless Remote Control, Timing Display Mode: LED Liquid Crystal Display Color: White, Emerald Duration: 1-3h Built-in Battery Capacity: 100mAh-300mAh Features: 1. [Oval Design]] This Product Adopts A Simple Oval Design With A New Frosted Texture, Which Is Consistent With People's Hand Grip Design, Simple And Comfortable. 2. [Convenient Charging] It Can Be Connected To A Computer, Mobile Power Supply, Power Supply And Other Charging Methods, And Has A Long Battery Life And Long Battery Life. 3. [Electric Wave Therapy] The Use Of This Product Can Stimulate The Neurotransmitter Of The Cerebral Cortex Through Micro-current, Thereby Regulating Emotions And Promoting Sleep. 4. [Improve Sleep] Using This Product, You Can Stimulate Your Hands Appropriately, So That You Can Relieve Anxiety, Regulate Emotions, And Promote Sleep Through The Same Hand And Brain Frequency. 5. [Multiple Modes] Multiple Working Modes Can Be Adjusted According To Needs. 6. [Small Design] Small And Convenient, You Can Carry It With You, Suitable For People With Insomnia, Excessive Thinking, Etc. Package Included: 1 Set *(1 Hand Sleep Instrument, 1 Data Cable)