Usage Tips:Features: Multi-functional electronic clock module, set for time, inside and outside temperature, voltage as one. You can display a single item, or you can cycle through the items alternately and customize the item to be displayed. for Time chip using -Epson"s RX8025T chip, this chip is a temperature compensated clock chip, for time accurate. Standard 0.3 for m +1.5 for m module with two waterproof probes, temperature range -35 ~ 120 degrees. With brightness adjustment, 3 brightness adjustable. And automatic brightness function, which can be dark at night, brighten during the day. Applicable models: 12V 24V Motorcycle, ATV, for Cross bike, Scooters and so on,for touch to set the electronic clock. It is widely used in equipment and for Cars, boat, Suv,planes etc. It"s small size and easy installation. Package Includes: 1 X Car Digital Clock Specifications: Working voltage: for DC 5.0~27V Mounting hole size: 19.5x56 mm Temperature display range: -35 ~ 120 (error 1 degree) Voltage display range: 5.0~28 V (error 0.1V Power lead length: 28CM note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.