This is a cordless keyboard mouse . It is made of good ABS material, durable to use. , no need to install driver yourself, perfect keyboard and mouse home, office, , school, and etc. Features -Color: Black -Material: ABS -Size: 36.80X14.30X2.63cm/14.46X5.62X1.03in - Silent and durable click, help you to on your work without disturbing others. - 2.4GHz connection, USB receiver can connect with both keyboard and mouse. - mouse and keyboard, get rid of the hassle of cables tangling. - It is simple in design, but very practical in use, which brings great convenience to you. - workmanship, reasonable structure, and practical, can bring you convenience. Specification Keyboard: - carrier frequency: 2402MHz-2480MHz - Working frequency: 16, automatic frequency hopping - Rated working of keyboard: 28mA/3V - system: optical - Resolution: 1000DPI - Battery: 1 x AAA (not included) Mouse: - Rated working voltage of mouse: 1.5-3V - Rated working of the mouse: 10-15mA - Mouse resolution: 800-1200DPI - working channels: 16, automatic frequency hopping - working frequency: 2.402-2.480GHz - transmission rate: 1-2M - The maximum effective distance: 6-10 meters - : 28 inches per second - Photo processing: 3000 frames per second - Mouse button life: 3 to 5 million times - Working temperature: -15 degree centigrade to 60 degree centigrade - Battery: 2 x AAA (not included) Package list: 1 x keyboard 1 x mouse 1 x USB receiver 1 x Manual