...at Performance Bike.
Dunno why they don't show it on sale online.
I just picked one up and started playing with it. First impressions are okay. You definitely need the manual to find your way around. Also, it falls asleep after 5 minutes of not changing altitude, which is kinda lame IMO. Naturally since it relies on barometric pressure, it reads all over the place. They say 1m accuracy, but I would place it more at 5-10m.
yeah, yeah... I know. GPS is better for altitude.... But I can afford $20, and not a good quality $250 GPS at the moment.
Mtbr's 2016 Winter Biking GearReviews and Roundups
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Thread: SI Altimeter - $20