FSK/DTMF compatible: FSK auto checkout time. Record 62 incoming calls, 18 outgoing calls, which can be checked .redialed and deleted it necessary. Hold on music and VIP function. Auto filter the local area code and auto add0"when dialing-back a long distance incoming. Pre-dial (32digits): Modification function. 24 rings and 10 digits of calculator 2 level locks. Pulse/Tone dial mode, Alarm clock and Steal-dialing alarm function. Hands-free dial and conversation; Digital adjustment for HF volume. LCD backlight and the contrastadjustable. Anti-EMI and thunder proof design. Dimensions (HxWxD): 21x20x6.8cm Weight: 683g