Working voltage: DC 5.0~27V Frame size: 22x58 mm Installation opening size: 19.5x56 mm Temperature display range: -35 ~ 120°C (±1°C accuracy) Voltage display range: 5.0~28V (±0.1V accuracy) Power lead length: 28cm Integrates time, internal and external temperature, and voltage into one display. Data can be shown individually or cycled automatically. Display settings are customizable. Equipped with RX8025T real-time clock chip for accurate timekeeping. Includes two temperature probes: one 0.3m and one 1.5m waterproof probe, with temperature measurement range of -35°C to 120°C. Features adjustable brightness with three levels and automatic brightness adjustment for day and night visibility. Condition: Material: ABS Color: Black Display screen color: Green Package Contents: 1 x Car Clock Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement error allowed is +/- 1-3cm.