Keyboard -Desktop Laptop Notebook PC Highlights Generic Brand Desktop Laptop Notebook PC Description: This is a silica gel keyboard, which can be rolled up for storage.Its light weight and small size size allow you to pack it anywhere. 2.4G Wireless: It adopts 2.4GHZ wireless technology. Strong anti-jamming ability, enjoy 10.0m/32.8ft long range wireless control; No driver and software installation needed, plug and play Requires 2 AAA batteries (not included) to work. Allows to be used for 1 year under normal daily use Fully waterproof, waterproof, waterproof design dust-proof, anti-oil, anti-acid, can be used in any harsh environment, and can disinfect and clean water Applicable: for desktop computers, laptops, tablets, smartphones, and supports Windows system / 98/ME/2000/Vista/WIN7/Android/Ios specification: Frequency: 2.4GHz Response time: 60ms Operating temperature: -40~55C Keyboard interface: standard USB interface Number of keys: 107 Strength of the button: 555g Button height: 4.4mm Working voltage: 1.9-3.3V Working current: 4mA Battery: 2 AAA batteries (not included) Effective distance: 10.0m/32.8 feet Item Size: 40.0 * 12.5 * 1.5cm / 15.7 * 4.9 * 0.6inch (L * W * H) Package includes: 1 x Wireless Keyboard 1 x usb receiver Note: 1.The keyboard can not contact with sharp objects, oil, chemicals and fire 2.There is no on/off switch, this keyboard will automatically switch to sleep mode when unplugging the USB interface. So you can put the USB receiver back into the card slot when not in use