Feature: 1. The keys of this watch adopt touch design, which is safer and more reliable, when using touch, every time a key is triggered, the interval time is preferably greater than 1s to avoid false triggering. 2. With backlight, is designed for measurement in dark or harsh environment, making measurement easier and more convenient. 3. The meter probe is integrated with the host, which can be measured at any time, which is more convenient. 4. NCV non‑contact voltage detection built‑in highly sensitive voltage probe, the screen displays the signal strength. 5. Main display, secondary display and analog bar triple display LCD display. 6. Enter the live measurement, the live characters are displayed on the LCD, use a red meter to approach the live test point and make reliable contact with the point, and the black meter end is suspended without touching any test point. Specification: Item Type: MultimeterMaterial: ABS Multimeter Size: Approx. 13.7 x 6.7 x 1.7cm / 5.4 x 2.6 x 0.7in Battery Model: 2 x AAA batteries (delivered without batteries) Working Environment: (0~40℃, relative humidity <80%) Measurement Method: Double integral A/D conversion Sampling Rate: About 3 times/sec . Package List: 1 x Multimeter1 x User Manual 1 x Storage Bag1 x Hand Strap Note: 1. The backlight is turned off after power‑on. When needed, you can press the HOLD key for more than 3s to turn on the backlight, and the backlight will automatically turn off after 10s. When the user is constantly using, the meter will not turn off the power; when it stops using, it will automatically shut down within 5 minutes; truly intelligent operation does not shut down, please refer to the shutdown instructions for details. 2. The watch adopts touch design for the keys, which is safer and more reliable. When using touch, every time the key is triggered, the interval time is preferably greater than 1s to avoid false triggering. 3. When you lightly touch any key, the touch key and the panel light up in the on state, and you can turn the function keys. After 5s, the touch key and the panel light are off in a locked state. 4. Manual measurement, for reference only.