1. Working voltage: DC 5.0~27V 2. Frame size: 22x58 mm 3. Installation opening size: 19.5x56 mm 4. Temperature display range: -35 ~ 120 (error 1 degree) 5. Voltage display range: 5.0~28 V (error 0.1V) Power lead length: 28CM Integrate time, internal and external temperature, and voltage into one. An item can be displayed individually, or items can be displayed alternately in a cycle, and the items to be displayed can be customized. The time chip uses s RX8025T chip, and the time is accurate. It comes standard with two temperature probes, two waterproof probes of 0.3 meters and 1.5 meters respectively, with a temperature measurement range of -35~120 degrees. With brightness adjustment function, 3 levels of brightness are adjustable. It also has an automatic brightness function that can darken at night and brighten during the day. Condition: 100 New Material:ABS colour:black Display screen color:Blue Package Contents: 1 x Car Clock Only the above package content, other products are not included.