Product description<br> Color: Black<br> Material:ABS<br> Screen:HD<br> Pattern: GPS/OBD<br> Weight:170g<br> Size: 12.7 x3.9 x7.5 (cm) /5inch x1.53inch x2.95inch<br> The Environment temperature: - 40 c + 80 c<br> Operating Voltage: 10% 95%<br> The Alarm sound level > = 3 dB (A) -<br> Atmospheric pressure 86-106 kpa<br> Operating Voltage: 9 v - 16 VDC 12 VDC / 400 (ma)<br> Environmental noise < = 60 db (A)<br>