EU ATEX certified products. Adopting advanced light source: The fourth generation of solid light source makes its brightness, energy consumption, service life up to 100 thousand hours, maintenance free, and no frequent replacement of the bulb troubles Suitable for all kinds of charging rack: With high precision constant current and constant voltage management circuit, it can be charged on any 5-10V charging rack Detection of charging stat and indication function: When charging is not full, the red indicator light is on, otherwise, the green indicator light is on. Automatic switching function of main and auxiliary light source: The main lamp can automatically switch to auxiliary lamp after the battery voltage drops to a certain value, so as to protect the battery from excessive discharge, prolong the battery life and the lighting time Better heat dissipation: High quality aluminum cup is adopted to improve the heat dissipation efficiency and prolong the service life of LED