, high quality 3 in 1 function: time, temperature, and voltage Four display modes: time only, temperature only, voltage only, and alternating time-temperature-voltage Stable performance with high sensitivity Material: Plastic Display color: Green Case color: Black Rated input voltage: 12V Temperature range: -40°C to 75°C Power source: Cigarette lighter socket How to use: Connect to the car's cigarette lighter socket to activate. The time will be displayed on the vehicle-mounted digital monitor. The display turns off when the car is powered off, minimizing power consumption. Internal clock operates with built-in industrial battery (no frequent replacement needed); professional-grade chip ensures accurate timekeeping. Package includes: 1 x Car digital clock with lighter plug 1 x Adhesive tape 1 x User manual Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed: +/- 1-3 cm.