It can work with out computer, the voice recording file saving in the SD card which is inserted the back of the recording box. And the SD card can be replaced at any time or you can copy the recording to your computer, then playback. The recorded folder named by date and time automatically, easier for you to manage the recording

Features:
Convenient recording: Use SD card carrier for recording, can recording without computer.
Two ways for recording: You can set automatic recording or manual operation recording as you need. Incoming
call will recording automatically.
Cycle of recording: support cycle of recording, when there is no more memory capacity, the earliest records will be overwritten.
Simple interface, easy to operate.
Blue LCD display.
With Clock function.
The equipment with a built-in Speaker.
The recording equipment with a 3.5mm headphone port

Specifications:
Item Size:10.2cm*6.5cm*3cm
Net Weight:120g
Power source:DC 5V
Recording form:WAV
Packing size:15cm*11cm*5cm
Gross Weight:340g
Power:500MA
Memory medium:SD card (16GB max)

Package Contents:
Telephone Recorder
Telephone Cable
Power supply