Sporty's has the Checkmate Pulse Oximeter for
$149. Recommended.
I bought it for my wife following her being released
after three weeks of ICU in 2006. A few weeks later she
had complications with the onset of pneumonia, so got her into the
ER post haste when noted it her oxygen saturation level dropping.
Needless to say highly recommend! Not just for
flying.
Oh the Checkmate uses a 1/2 AA sized
3.6V lithium battery. Tadiran TLL-5902
Radio Shack carries replacements at $20.00
(ouch). Digikey shows them for $6
each (need to save shipping and pick 'em up next
time I'm up there! :)
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