Feature: Car Motorcycle LED Digital Display Voltmeter Measures DC voltage 6-30V Low voltage (12v or less) and high voltage (16v or higher) flashing warning function Simple to connect and easy to use.Ultra-thin mini & lightweight Widely used for cars motorcycles substation automation distribution automation test equipment voltage regulator and so on. Specifications: Product Function:Voltmeter + Electronic Clock LED Display Color: Red Blue Green White Material: Acrylic Voltage Measuring Range: 6-30V Precision: ?0.2% Size: Length: 5.7cm(2.24in) Wide: 2.9cm(1.14in) Wire Length: About 120cm Quantity: 1 Set Time setting instructions: In the power supply state after pressing the button for 2 seconds the hour segment flashes indicating that the hour setting is entered. At this time press the button once for 1 hour (24-hour clock). After the clock is set press and hold the button again for 2 seconds the minute segment flashes indicating that the minute setting is entered. At this time press the button once for 1 minute. After setting the minutes press and hold the button again for 2 seconds to exit the time setting. Package Included: 1 x Voltmeter 2 x Cable Tie 2 x Screws NO Retail Box. Packed Safely in Bubble Bag.