and high quality 3-in-1 function. (Time/ temperature/ voltage functions) Four display modes. (Time only/ Temperature only/ Voltage only/ Time-temperature alternating voltage) Durable, stable, high sensitivity<br><br>Display color: blue Material: Plastic Shell color: black Rated input voltage: 12V Temperature range: -40 Celsius ~ 75 Celsius How to use: Turning on the power of the car, the time will be shown on the vehicle mounted clock monitor. The indicator goes off when the car power is turned off, so the clock power is not consumed. The internal clock can work properly by using industrial battery (frequent replacement is not required), and the professional imported chip makes the time very accurate.<br><br>Package Contents: 2 x car digital clock with cigarette lighter plug 2 x adhesive tape 2 x user manual