i got a crappy one with an adult happy meal at mcdonalds 3 years ago and the batteries are still going strong LOL go figure! it's probably not super accurate tho, you can only program height/weight, not actual stride etc.
Now: 171 - nope, 165 now!
NOPE -- 162 now!
Holy crap i've lost a PERSON!
"People often say that motivation doesn't last. Well, neither does bathing - that's why we recommend it daily." - Zig Ziglar