[. . . ] [. . . ] C301 Corded phone Extra large buttons 3 programmable photo-dial memories Visual ring indicator (LED) Hands-free Ringtone volume adjustable (High / Low / Off) Second call management* Last number redial function (Bis) Mute function C301 Ringtones Number of ringtones 3 2 CHARACTERISTICS Compatibility PABX Compatible Dialling Mode YES Tone (DTMF) Levels of ringtone DESIGN & ERGONOMIcs Colour Colour available Black & White Communication Second call management* Three-party conference* YES YES Ergonomics Direct access key YES 3 10 Memory keys with photos Other memory keys Physical settings Handset weight Handset size (mm) Base weight including batteries Base size (mm) 193g 200 x 56 x 51 662g 228 x 204 x 51 FEATURES Call list Last number redial function (Bis) YES Audio Mute mode YES Hands-free with adjustable volume YES Adjustable earpiece and microphone volume Ringtone volume adjustable YES High / Low / Off Health / Care Hearing-aid compatible YES YES YES (LED) YES Extra large buttons Visual Ring Indicator Battery Battery 4 x Standard LR06 AA Alcalines Wall mountable Security Secret mode YES [. . . ] [. . . ]