Bicycle Phone Holder with LED Light and Compass Function Printer Parts & Supplies Trigger and alarm: it will

Trigger and alarm:   it will light and ring when someone open the door

the system will automatically charge the charge current to 500 mA by default

Let all the 0 ¡ã surround sound field

Unit Compatible Models all cell phones and smart phone models Other Features Internet: 3G / WCDMA / GSM 2100MHz Frequency Range: 1920 ~ 1990MHz and 2110 ~ 2180MHz Power: DC 12 ~24V Up to 500 meters coverage in signal weaker areas Installs easily in any vehicle and stay connected in signal weaker areas Packing List 1 x Signal Booster

Bicycle Phone Holder with LED Light and Compass Function Printer Parts & Supplies Trigger and alarm: it willColor Black + Green Model N A Quantity 1 set Material ABS Type Phone Holders Packing List 1 x Bracket 1 x Allen wrench