Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

100% brand new and high qualitySuitable for 12V and 24V battery.Maximum output current:2.1A.Output voltage:5.0V.Display color: Red + Blue.Size : 7.8*4.7*2 cm/3*1.85*0.78 inchColor: BlackFunction:1. Digital thermometer suitable for 12V and 24V battery measuring range2. Simply plug into cigarette socket， instant confirmation of battery voltage， low power consumption high light display.3. Car-Mounted Charger.Features: Versatile， simplePackage Included:1 x Car Charger Voltmeter Thermometer Monitor