Features: 1) muti-channel access with auto-scan 2) muti-handset system(up to 15) 3) muti-base system(up to 4) 4) walkie-talkie between handsets(up to 15 handsets) 5) half-duplex group call 6) two-way paging and hands-free intercom 7) 10-set memory dial for each handset(20 digits) 8) last number redial 9) tone/pulse dialing mode selectable 10) change channel during conversation 11) keypad lock function 12) flash time programmable 13) ring volume adjustable 14) voice volume adjustable 15) music on hold 16) touch any key answer 17) handset with power saving circuit 18) low battery alert and indicator 19) out of range alert 20) battery powers status display 21) fast charge 22) built-in noise cancellation circuit(compander) 23) built-in voice security and mutation circuit(scarmbler) 24) auto answer and auto hang up 25) transferring a call among handsets 26) hands-free kit for handset(operational) 27) separate charge (operational) 28) vibration alert(vibration version only)