The product 's light source is powerful and stable, easily penetrating optical fibers over distances of 5, 15, 20, and 30 kilometers. It uses a 2.5mm universal interface, plug-and-play without needing an adapter, and supports three common fiber optic interfaces: SC, FC, and ST. The device comes with a built-in LED flashlight feature, convenient for working in low-light environments. The USB interface supports power banks, car chargers, computers, and other common interfaces, with a large 1500mAh battery capacity. It can be powered by 3 dry batteries or lithium batteries, and can also be directly powered through a USB connection to an external power source.