So the Jabra Pulse has lots of fit options, decent sound and battery, and syncs easily with my phone. [url=http://www.dannywinstanley.co.uk/adidas-superstar-c-7/adidas-superstar-womens-c-7_11/]Adidas Superstar Womens[/url] Sounds great, right? Unfortunately, things start to fall apart with the heart rate monitor. Crumble into dust might be a better way of saying it….
First off, the Jabra Pulse only connects via Bluetooth Smart. This is fine for music, but I never look at my iPhone while running, so seeing a real-time readout of heart rate would require the ability to sync it with my Garmin 620 or my Vivofit. Unfortunately the Jabra [url=http://www.hijosdelvacio.es/Nike-Air-Max-2017-Mujer-c-1_11.html]Nike Air Max 2017 Mujer[/url] does not support ANT+ (the Mio Link and Scosche Rhythm+ both support ANT+), so I cannot display HR info on either device. You’d know this [url=http://www.hijosdelvacio.es/Adidas-Superstar-Mujer-c-57_74.html]Adidas Superstar Mujer[/url] before making a purchase, so this isn’t really my big knock on the HR function. It’s worth emphasizing however: don’t buy the Jabra Pulse [url=http://www.joomlas.co.uk/nike-air-max-90-c-16/nike-air-max-90-womens-c-16_20/]Nike Air Max 90 Womens[/url] thinking you can pair it with your Garmin watch – it won’t work.
Jabra Sport PulseThe bigger issue I have with the heart rate functions of the Jabra Pulse [url=http://www.alainhemet.fr/nike-air-presto-c-57/nike-air-presto-femme-c-57_58/]Nike Air Presto Femme[/url] is that it simply does not work that well. The device measures heart rate via an optical sensor built into the earbud (see photo at left). Presumably this analyzes blood pulsing through the skin of the ear and uses this info to calculate heart rate. Unfortunately, the signal is unreliable with tons of dropouts, and at times the reading is way off what I would expect for a given pace. In fact, I’ve had almost [url=http://www.joomlas.co.uk/nike-air-vapormax-c-39/nike-air-vapormax-womens-c-39_41/]Nike Air Vapormax Womens[/url] entire runs where the heart rate is not even close to where it should be.
Let’s look at some comparison plots comparing HR data from the [url=http://www.pierrerobyr.ch/adidas-ultra-boost-c-20/adidas-ultra-boost-damen-c-20_21/]Adidas Ultra Boost Damen[/url] Scosche Rhythm+ and the Jabra Pulse. The Scosche data comes from my Garmin 620 via SportTracks, and the Jabra data comes from iSmoothRun .tcx file [url=http://www.pierrerobyr.ch/adidas-superstar-c-13/adidas-superstar-damen-schwarz-c-13_17/]Adidas Superstar Damen Schwarz[/url] export into SportTracks.
First is a plot from a recent 10K run in which I pushed the pace a bit in the final mile. The first plot below shows data on pace via my Garmin 620 and HR via the Scosche Rhythm+. What you’ll notice is that the HR plot is fairly smooth with no dropouts, and HR moves up a bit toward the end of the run when I picked up the pace.Next we have the same run with pace data from my iPhone and HR from the Jabra (I couldn’t get the scale to be quite the same). What you’ll notice on the HR plot is over 20 dropouts. Even worse, after mile [url=http://www.joomlas.co.uk/nike-air-max-90-c-16/nike-air-max-90-womens-pink-c-16_18/]Nike Air Max 90 Womens Pink[/url] 2 or so the HR line hovers around 185 bpm. This is approximately my maximum heart rate, and I can assure you I was never even close to that [url=http://www.alainhemet.fr/nike-air-max-thea-c-45/nike-air-max-thea-femme-c-45_46/]Nike Air Max Thea Femme[/url] high on this run. Something is very wrong here!
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