I can see the thing you mean Rich, but it's not on any of the other pics with the light from different angles, so it could be a fluke of the lighting.If you want to go have a deeks yourself, Garmin E-trex: NZ 01890 64784 alt: 111m acc: 4m, Dr M. reckons they'll go up on the B.Archive when he gets time to update it.