The low profile membrane key switch features a five million lifecycle and is designed with a silicone rubber material for a faster and quieter typing experience. When the batteries are in low power state the green LED indicator will light up on the upper right hand corner of your keyboard indicating new batteries are needed. The Glidepoint Touchpad puts cursor control at your fingertips and its central positioned offers ultimate comfort and convenience. With 2.4GHz RF wireless technology and 65000 IDs on 12 channels you can enjoy 30 feet of wireless freedom. The keyboard goes to sleep mode after 5 minutes of not being used. 2.4GHz RF Wireless Technology with 12 Channels (65,000 IDs per Channel) Keyboard Layout: 104-Key US Layout Power ON/OFF Switch for Increased Energy Saving Includes Mini USB Receiver Dongle Magnetic Receiver Tray on the Back of Keyboard for Storage Touchpad: 2 button Glidepoint Touchpad with scrolling feature Touchpad Working Area: 2.25" x 1.50"