Description: 【Sleeping Aid Machine】: The sleep aid device adopts advanced technology, helping to improve sleep quality and enter deep sleep as soon as possible. 【Adjustment】: The sleep instrument features two modes, sleep mode and excitement mode, with 15 adjustable levels, button adjustment, you can choose according to your needs, easy to operate. 【Compact Size】: Handheld sleeping aid machine, compact and lightweight, easy to carry, suitable for travel. 【Rechargeable】: The sleep device is USB rechargeable, 150mAh capacity, long standby time, providing you uninterrupted sleep 【Gift】: Simple oval shape, matte texture, and comfortable to grip, the handheld sleep aid device is a great gift for your friends and family who has sleep problems. 【Note】: Please charging the device for about two hours before first use. Specification: Material: PP and stainless steel craftsmanship Voltage: DC5.0V/1A Power: 0.3W Using Time: 2 hours Size Chart: Package size 10.4cmx9.3cmx4.1cm/4.09inchx3.66inchx1.61inch Package Includes: 1 Sleep Aid Device 1 USB Cable 1 Manual Note: Please allow slightly errors due to manual measurement and different monitors.