The Philps LFH9162 can be used with any telephone. Thats the beauty of it, most telephone microphones and hookup connectors requir either a old style wired telephone or at the very least a cordless that plugs into the wall. Not with this unit, it can record everything from a rotary telephone to an cell phone.
The super sensitive microphone picks up both ends of the conversation with crystal clarity. The cable is retractible for easy storage. Most importantly it doesn't need a battery, simply plug it in and it works.