October 21, 2014
Don't really need the thermometer and compass but thermometer works fine and compass does work but slow to orientate itself and has to be held at a specific angle to work. whistle is fine - nice and loud.
September 29, 2014
Lightweight, brightly coloured, 'umpire's' whistle, with integrated small compass and thermometer (20-50 celsius)
September 17, 2014
Will probably prove very useful on the annapurna circuit. functional and light!