The knog. lighting range is one of the most versatile lighting systems on the market today.
Start with a torch or headlight kit and you are ready. Choose a different strength torch head and it will attach to the battery you already have from your kit. Maybe you want a stronger torch, just purchase the torch head and use with your existing kit. Maybe a spare battery is needed......you can just keep adding....
Now this is where the fun begins....you can set your light to how you want it to function....customise it to suit you