30mm 12V 4A driver for L6 M21G with GT FC40

Diameter
Input 6-8.4V
Output 12V 4A ,customized driver for GT FC40
Mode: 1%-10%-40%-100% (Double click side switch ----> strobe),max output 4amps
The switch on the driver only has the function of switching modes.It cannot be used to turn off the flashlight.