I have listed a Scott oxygen mask (with built in microphone) and a diluter
demand regulator, with blinker and gauge at ebay.co.uk. If you are in the
UK and are interested, please use the tinyurl links below to find out more.
If you have any questions please send them to me via the link at ebay.

Oxygen mask - http://tinyurl.com/oz70

Diluter demand regulator - http://tinyurl.com/oz73


Andrew