Product features:

1 telephone recording box plug the cable into the wall phone box and the other end into the Phone, and use time: (date) (month) (year) when the minutes for the recording file name;

2, Make a  folder for the  time: year and month.

3, the recording formats: WAV. The recording file under the TF card REC folder.

4, the recording file can then be placed on the SD Card and dragged onto it then laced inside of the box.

5, Simply hang up and it'll then save the recording.

6, telephone line will charge the battery whilst connected into the telephone.

7, If the power is low it'll automatically save the file.

8, built-in lithium ion rechargeable batteries.

9, automatic recording, record the full memory automatically delete files before continuing to the recording.

10, product size: 59mm * 42mm * 22mm