Features - Color: Black. - Material: Plastic. - Size: About 14.5 x 13 x 2cm/5.7x5.12x0.79inch. -Receiver(dongle): Nanostyle -Connection port: With USB2.0 or above -Transmission mode: GFSK 2.4GHz wireless, up to 10 meters -Transmission frequency : 2400-2483MHZ(16 channels) -Transmission Power : Less than +4bd -Power supply: Rechargeable polymer Lithium-ion battery -Charging voltage: 4.4V-5.25V -Charging current: 300mA -Operating current: < 15mA(backlit off) Specifications -Operating current: < 15mA(backlit off) -Sleeping current: < 100uA - Durable keys and precise response, for everyday use. - Optical engine, precise positioning and smooth to use. - Touch panel coordination index can be automatically rotated and adjusted according to the operating position. - Wireless shutdown key with infrared learning function, infrared radiation and self-learning function, completely eliminate the use of infrared remote control. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DKPOP store