Two in oneExtra-thin design, chocolate keysShared Mini ReceiverEconomical modular design2.4GHz wireless transmissionMouse DPI: 1000Mouse Buttons: 3Keyboard Keys: 104Wireless transmission frequency: 2402MHz-2480MHzWireless transmission distance: MAX 10mReceiver connection type: USB 2.0Power supply: 2xAAA battery for mouse, 1xAAA battery for keypadSupported Operating Systems: PC and Mac