Specifications: With the exquisite and compact size, the keyboard and mouse are easy to carry. Under the 2.4G power saving mode, a high-performance battery can be used for 6 months The noise of button is lower closely to mute. It has high sensitivity for you to operate it. Item Name: Wireless Keyboard + Mouse Material: ABS, PC Battery: Keyboard: 2 x AA Batteries Mouse: 1 x AA Battery (Not Included) Wireless Carrier Frequency: 2402-2480MHz Working Frequency: 16 (Automatic Frequency Hopping) Keyboard Rated Working Current: 28mA/3V Keyboard Resolution: 1000CPI Compatible Systems: for Windows Me/2000/XP/Vista (with an Unoccupied USB Interface) Mouse Rated Working Voltage: 1.5-3V Mouse Rated Working Current: 10-15mA Mouse Resolution: 800-1200DPI Wireless Working Channels: 16 (Automatic Frequency Hopping) Wireless Working Frequency: 2.402-2.480GHz Wireless Transmission Speed: 1-2Mbps Maximum Effective Distance: 6-10m Maximum Acceleration: 28 inches/s Mouse Button Service Life: 3-5 Million Times Image Processing: 3000 Frames/s Working Temperature: -15-60 Degree Celsius Features: Wireless, High Speed Transmission, Low Consumption Keyboard Size: 36.8cm x 14.3cm x 2.6cm/14.49" x 5.63" x 1.02" (Approx.) Mouse Size: 11.6cm x 6.6cm x 3.5cm/4.57" x 2.6" x 1.38" (Approx.) Notes: 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. Package Includes: 1 x Wireless Keyboard 1 x Wireless Mouse 1 x Micro USB Receiver