Specifications: - specifications:2.4ghz digital spread spectrum - multi-handset capability up to 3 handsets (extra handset sold separately), cellular phone docking station links cellular phone to home phone system,20 numbers memo dialing, LCD/keypad back light (green) - super sleep feature for extended handset battery life - dual keypad, speaker phone - handset to handset intercom - radial/pause/flash, mute - volume control - speaker volume control - ringer tone select - headset jack (headset not included) call waiting caller (pstn) - changeable cellular phone cradle for different cellular phone use (cradle for different cellular phone model sold separately