Description Features: Real-time digital display, waterproof, low pressure, high voltage warning function. DC voltage measurement, helps maintain normal vehicle voltage, extends vehicle service life. LED panel digital display, provides quick readings, more intuitive, fast and convenient. Compact size, easy to carry, does not obstruct operation, ensures safe usage. Easy to install with included fittings, securely holds the meter in place, stable and not easily displaced, ideal for voltage monitoring. Package Includes: 1 x Voltmeter + Electronic Clock + Thermometer Specifications: Material: Plastic Size: 15x29.5x58.5mm / 0.6x1.16x2.3 in Function: Voltage display, temperature display, clock display Note: Please allow 1-3cm error due to manual measurement. Please ensure you are comfortable with this before purchasing. Due to differences in monitor displays, the image may not reflect the actual color of the item. Wiring method: Red wire connects to the positive terminal of the battery, black wire connects to the negative terminal of the battery, blue wire connects to the main power switch. After power is applied, the boot screen will appear, followed by time display (initial time after power-off is 12:00). Time format is 24-hour system. Battery voltage measurement range: DC 8V–72V. Temperature range: -30°C to 70°C