Meter size:2.5inch (62mm)meterrial:ABS Plastic Suitabre For All carpower on:self check with sound/open ceremony visible angle:270 degrees34 color (switchable)(White,yellow,green,blue,light blue,purple,red)2 ini-All build in with digital voltage view Installation:� 4 Pins Power Cables: Red -- Battery + White -- ACC + Yellow -- Lights + Black -- Battery - (Metal part of car)�Sensor and Signal Cables: RED --> Sensor "G" BLACK --> Sensor "WK"