3V LED flashlight long life,high lamp efficiency high color ... .2. It adopts magnetical switch, the work light and strong light can be selected freely, and Bs51 also have ... high lamp efficiency and low energy consumption. 4. BS51A light source, in order to import 3W LED, the mere result ... the spotlight is good, shine far. 5. Bs51 light source is a purpose-built steamed tungsten bulb, the mereresult is ...