Slim design folds and stores easily for travel. Foldable, portable design, easy to put into pocket. Anti-splash water, Non-toxic silicone keyboard. Pairs easily with iPad, iPhone, Android devices, Windows tablets, Windows phones and other Bluetooth HID compatible devices. Working voltage: 3.7V Working current: 1.5mA Standby current: 1.0mA Charging current: 150mA Operating distance: within 10 meters