It’s hard to get too worked up about an HR strap, but if there’s one to get excited about it’s the Viiiva by 4iiii. It’s both ANT+ and Bluetooth, so you can use it on the bike with your Garmin or SRM, or you can use it with the Wahoo RFLKT, or you can use it on a run with your smartphone. Best of all, it transmits R-R intervals – the precise time span between heartbeats – so it’ll work with ithlete without a dongle (some straps transmit bpm instead of R-R intervals). Signal strength seems superior to ithlete’s strap as well, speeding up the morning routine. $80 here.
UPDATE: After noticing a slight uptick in my HRV scores I took some readings using both ithlete’s strap and the Viiiiva simultaneously. The Viiiiva would report a score 6 points higher each time.
Right off the bat – I’ll comment that the connection snap will eventually erode from the salt and render the strap useless. Its a design flaw that POLAR did away with a long time ago. one would think that this company did their homework.
Salt from your sweat will collect at the bottom of the snap preventing the male connection nipple to fully recess into the strap female snap receptor. what you will then have is a heart rate monitor that will not transmit because the contact is covered with salt deposit. cleaning after every ride helps but eventually the salt wins.
agree
This thread is full of innuendo.
“Dongle”
“Strap”
“Male”
“Female”
“Sweat”
“Deposit”
“Speeding up the morning routine”
My Garmin works just fine and I sweat more than your mother..
Form of: Super Dork!
I bought one of those after reading this and found it worked well.
I can’t speak to salt build-up just yet, though I could see how that could become an issue.
I have been using the Viiiiva since I received it back in March and have to say the results have been great. I use it to display HR data via Ant+ onto my non-gps Bontrager Node computer, and gather all of the other data I need directly with Strava on my iPhone.
I did a full review here if anyone cares to read: http://tubelessready.blogspot.com/2013/03/review-4iiii-viiiiva-heart-rate-monitor.html
I do plan on going back and retesting with the Wahoo app however, as I don’t think I gave that setup enough attention. Strava worked the first time, so I stuck with it.
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