ITEM NAME:Led Digital Car Clock Automobile Electronic Clock 12V Car Voltmete hv2n Product Description Description: Description Size: 13.3cm*2.2cm L x W Material: Plastic+LED Case color: black Display color: blue Voltage: 12V Temperature range: -40~75℃ Function: 3 in 1 Time/Temperature/Voltage Display mode: 1. Time only 2. Temperature only 3. Voltage only 4.Time Temperature voltage alternating Note: 1. With memory after the display mode is set once. 2. Temperature deviation manual correction in the range of -5 ~ 5 ℃. 3. Built-in imported super long life memory battery which makes the clock keep working even after the car is power off. How to use: Turn on the power of the car, the time will be showed on the car mounted clock monitor The display will be off when the car power is turned off so the power of the clock is not consumed. The internal clock can work properly by it is industrial rechargeable battery Frequently replacement is not needed and the professional imported chip makes the time to be very accurate. Included: 1pc clock, 1pc adhesive tape, 1pc English-language manual.Included:1pc clock, 1pc adhesive tape, 1pc English-language manual. Material: Plastic+LED. Temperature range: -40~75℃. Temperature deviation manual correction in the range of -5 ~ 5 ℃. If item is defective after 3 months, you can still send it back to us.