Feature 1Reduce Anxiety: Microcurrent sleep aid can massage your both hands, make your hand and brain with the same frequencies o relieve anxiety. 2Promote Sleep: Use sleep aid 20 minutes a day can relieve headaches, help you eliminate stress, anxiety, sleep problems and improve sleep. 39 Gears: Handheld sleep device with 9 strength gears for you to choose, suitable for different people, which is a perfect gift for your friends and families. 4Mind Relax: Grasp the sleep device with the palm of your hand so that the electrode is centered, which can effectively promoting relax and improving sleep. 5Portable Size: Sleep aid machine is light in weight and compact in size, which is easy to carry, suitable for school, office, home and business traveling use.Item Type: Handheld Sleep DeviceMaterial: ABS, 304 Stainless SteelBattery Type: Lithium Battery(Included)Battery Capacity: 5V 180mAhSize: Approx. 60 x 40 x 37mm / 2.4 x 1.6 x 1.5inCharging Input Voltage Current: 5V/1A .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xHandheld Sleep Device1 x Manual1 x USB Cable