Sourcingbay Mini Digital Telephone Call LCD Display Telephone Recorder with Sd Card Slot Phone Voice Recorder Automatically record conversations.Recorded on SD Card, LCD displays for all call information. The Telephone Recorder Pro is an easy-to-use stand-alone telephone recording system that automatically records your telephone conversations. These conversations are stored internally to a removable SD card. It is both battery and AC-adapter powered, and does not need to be connected to any other devices to record. Works only on single-line analog phone systems. Does not work on digital or internet phone lines, or multi-line phone systems. This powerful recording device is very small, so it easily fits next to your phone. Monitor personal and business calls, and keep recordings of every single call you make.