size:Diameter 17mm, PCB thickness 1.7mm,components 1.6mm high
Protection:Reverse polarity protection, low voltage protection, mode memory function
input voltage: 3-4.5V
output current:1050mASuitable for the LED of type voltage 2.8-4VModes(2 groups 8 modes)Group 1 (5-Mode): Lo (5%) > Mid (40%) > Hi (100%) > Strobe > SOS;Group 2 (3-Mode): Lo (5%) > Mid (40%) > Hi (100%)How to Switch the group?switch to low mode and wait for 5 seconds. As soon as you notice a quick blink, half press the power switch and mode group is then toggled