head lamp ,lens zoom,3 files,XML-T6 860lumens 1.lens ... 860LMShift: three-mode switch, the first light, the second low-light, three Baoshan, followed by cycle.Battery: design the parallel ... as usual, highlight, can work for 2-3 hours, low light can work continuously for 10 hours.Tips: Whether ... , or two battery voltage is not the same, it is likely to cause one of the low voltage battery over-discharge, ...