I was on fire for the pulses after I've bought the balance of Withings. Unfortunately, I was disappointed. Theoretically, the small 8g light pulses a lot, but the results unfortunately it falls short. I knew the sleep test can not be taken too seriously, but my alleged awakenings voted not nearly. The pulse measuring device reliably. The steps include the Pulse also absolutely reliable. I have counted several times and it was down to 1-2 steps, no deviation. But then for me a very big shortcoming. The Pulse will automatically detect when you walk / jogging. Over a distance of 2.9km of pulses then measured only 2.3km! About 600m deviation on such a small distance I find it very worrying. So I still always have to another device for jogging with me taking to measure the distance, which was originally not intended by me.
Thus, one therefore has the pulses a device which reliably measures steps, indicating the altitude and heart rate measures (which you already can make a smartphone app) ... that's me clearly not enough for the money.
Too bad, because I'm a fan of technical equipment and was quite taken with the notion that data can be evaluated and all converge in my Withings account.
Unfortunately, so only 2 star and the product sent back :-(