Handheld Micro-Current Instrument Anxiety Pressure Relief Handheld Relaxation Device Lightweight Sleeping Device for Fast Asleep. Features: Sleep Quality Enhancement, Safe & Universal, Quick Relaxation, Portable Comfort, Mood Regulation. Specification: Origin: Mainland China, Product Size: 182.00x31.00x31.00mm/7.17x1.22x1.22inch, Material: Plastic + Silicone + Electronic Components, Battery Capacity: 500mAh, Charging Voltage: DC 5V/1A, Voltage: 0.5W.