As previous commentators wrote, the first step is to throw the rubber out of the mount and replace it with real rubber - after that it is attached to the steering wheel perfectly. Inside there are two 18650 cells without any marking, but for some reason surprisingly small capacity - less than 2022 mAh in total. By the way, it is easy to disassemble - it is assembled on 6 bolts. So those who know how to use a soldering iron can easily resolder the batteries into more decent ones and make a jar of a more reasonable size. Modes: three brightness modes, one red flashing. The maximum bright mode is not super bright, but sufficient for a quiet ride at night through the forest. The lantern has two cones of light - a narrow, brighter one and a wider, dim one.