* The V-0031 is small in size: about 5. 2cm × 6cm ×1. 3cm, it convenient to install and prevent from being seen or discovered by driver to easy.

* The aim is to stop cell phone connection when driving, it is revent the automobile accidents because of calling they mobile phone when driving

* Technical specifications:

1) Effective shielding range: 2 meters radius

2) Isolation bandwidth:

CDMA: 869-894MHz GSM: 925-960 MHZ DCS: 1805-1880MHZ

WCDMA: 2110-2170MHZ

PHS: 1900-1925MHZ

PCS: 1930-1990MHZ

3) Power adapter: 12V