Microtel Landline Phone SP-F303 CID with blue backlight and call indicator Product Description :- Microtel Caller ID phone is built with super high quality components which can sustain all types of climatic adversity for country like India. This is a low maintenance highly rough & tough use phone for both home & office purpose & can also be used with wireless terminals. All it requires is a telephone in.It is very useful to you. Technical Specification :- 10-digit calculator function,alarm function Keypad dial lock caller id phone with blue backlight and call indicator. Caller ID Speaker Phone function Good quality FSK/DTMF compatible 24 groups ringer can be selected Ringer Hi/Low Switch Three way Lock Calling back from caller ID list Two telephone line jack provided Flash time can be selected 1000ms,600ms,300ms,110ms Call in and dial out