Power supply: with USB charging
Features: 1, the key (Left):
A press is to show light and glare time (maximum 2 hours)
Two press is to show low-light and low-light time (maximum 9 hours)
Three press is turning off the power
2, the next key (right):
A press is to show time
Two press is to show date
3, the arrow keys (left and right keys) simultaneously press the SOS distress signal
4, long press the button (right) Adjustable time and date, press the right time to press the right to adjust the flash, the next adjustment is long press a flashing right to adjust
5, long press the left button to display the flash strobe
Installation: You can bring in your hand, the beam can also be installed on the front of the bicycle can be placed in any position on the bike.