I used to have a small strobe, it was about the size of a small hand torch and ran off of 4 x AAA it had a bright yellow plastic body and you could swap the lenses. 1x clear 1x red 1x green. lent it to my lad for his DofE and he knackered it as to be expected. only problem is I can't find a replacement and I'd like to have one in my day sack for just incase. can anyone help?