Features: Lightweight and compact, stress-free travel, easy to operate with one hand. Keychain design, simple and fashionable, can be hung on the for key ring, anti-fall and anti-lost. Automatically shut down after one hour of inactivity, avoiding the waste of electricity caused by accidentally touching the switch. Button groove designed, and the power is turned on after pressing for two seconds to prevent turning on the device accidentally. Equipped with LED small flashlight, it is convenient to check the construction in the dark environment, making the work more convenient. Specifications: Material: Plastic Size: Approx. 93x46.5x21 mm/3.66x1.83x0.83 in Package Includes: 1x Visual Fault Locator note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.