Feature:1. For 2.4G wireless transmission, with signal stability, it is anti-interference, and the digital keyboard and mouse share one receiver. 2. This set is made of 2.4G wireless numeric keypad and mutet wireless mouse, which is practical to use. 3. In scissor-foot design, you can comfortablely tap. And also it is with low-key cap design, moreover, its quick rebound speed for a more comfortable and quiet input experience. 4. With 1600 DPl resolution, the mouse is compatible for WIN7 / 8 / 10 / MAC / Android system. 5. Working method of mouse is optical engine, and the keyboard will enter sleep for no action in 3 minutes. Specification:Item Type: Keyboard + Mouse Material: ABS Gross Weight: Approx. 194.00g Packing Size: Approx. 16.50 x 13.50 x 3.00cm / 6.50 x 5.31 x 1.18 in Keyboard Parameters: Wireless Protocol: 2.4G Working Distance: About 10 meters in the case of barrier-free. Battery Type: 2 x AAA battery (not included) Working Voltage: DC 1.5V Working Current: <5mA Continuous Working Time: 250H (1000mAh battery calculation) Standby Time: 120 days Sleep Current: About 50uA Dormancy: The keyboard enters sleep for no action in 3 minutes. Status Display LED: 1. The LED is a red light 2. The red light is always on for NUM LOCK state, after the sleep, the red light is off. 3. Low Voltage Indication: Flashing in red light working state refers to low voltage indication. Mouse Parameters: Transmission Method: Wireless 2.4G Working Method: Optical engine (trace) Compatible System: For WIN 7 / 8 / 10 / MAC / Android system Resolution: 1600 (DPl) Working Current: <15mA Power Mode: 1 AA battery (not included) Package List:1 x Keyboard1 x Mouse1 x Receiver1 x Instruction Manual; Note:Keyboard and mouse batteries are not included.