Sonics Cordless Phone SS-3611CL IS 2.4 GHZ Frequency Hopping Spread Spectrum (FHSS). FHSS technology provides clear sound over longer ranges, as well as digital security to prevent eaves dropping. This phone is having clock, alarm, any key answer, wheel navigation keys, light-up indicator with ringer alert in AMBER color LED, digital security code, paging and 7diffreent ringer patterns, AAA NI-MH battery providing talk-time of 5 hours and standby time of 11 days (264 hours) and 50 phone book entries and 5 redial memory. Other Features are Security Code Over 1.0 million codes and Night Mode Ringer ID*1*2 7 Ringer Patterns (3 tones, 4 melodies) 7-Hour Charge Time Cordless Landline Phone and use it at home or in the office to ensure that you get all of your critical calls. Its 0.76 cm (1.3) amber backlit LCD screen makes it easy to read even in low light. Also, this landline phone sports a two-way duplex speaker that allows you to converse with the other person without having to lift the handset. Furthermore, the ringer ID allows you to assign various ringers to different people so that you can recognize them without having to look at the screen. This Phone can Store 50 SMS and call record of received calls, missed calls and dialed calls. In addition, the display of this cordless phone allows you to select the date and time with ease. Moreover you can also select different Ring tones for Calls, Messages etc. You can also see the Battery level of device by looking at the display.