Toshiba SG1800 2.4 GHz Silver Cordless Phone 2.4 GHz phone with digital spread spectrum transmission and caller ID/call waiting 2-way 2.4 GHz transmission with 30-channel auto scan Caller ID memory holds up to 50 names and numbers; 20-number speed dial 4-level volume control, mute on handset; headset compatible Programmable digital security code