In reply to TheWestFace: I have not used the over the head strap and never had any movement of the torch although my use has been limited to walking/scrambling activities. It has been very secure and I have never felt it move even using different types of hats. The over the head strap is only very small anyway and unlikely to cause any inconvenience, but I've never seen the need to use.
My only "complaint" with the Myo is the turned down end to the diffuser, when in the down position, it appears lit up due to refraction within and I find it irriating in the dark to have a spot of light just above my eyes - only noticable where I like to positon the torch on my forehead as if pushed up further it is out of the line of vision! I have over come this by painting the small end black! Otherwise great torch for what I want.
I believe the newest version has an output of some 210 lumens?