Polar H7i

Polar are about to release a new HR sensor by the look of it, the H7i. It’s waterproof to 30m so likely to replace the H7. This could be a sign of imminent v800 successor too, since these sort of things are often released together. We can only speculate on what the H7i contains but it’s likely to be running dynamics or store and forward swim data similar to what everyone else has been doing for a while. To my eye, the device doesn’t look smaller than the old one, which would be a mistake at this point as the Polar devices already looked massive even before Garmin made theirs smaller.

Polar H7i FCC

In the test report, the unit is described as “BLE, 5kHz inductive link, accelerometer” so I think we can confidently predict some kind of running dynamics or at least cadence from the HRM will be included in the v800 replacement, and certainly in the H7i.

The report later states:
“The test sample consists of a Polar H7i heart rate sensor that uses Bluetooth Smart technology providing ECG-accurate heart rate to any Bluetooth Smart ready device utilizing standard heart rate profile. There is also 5 kHz HYBRID data transfer. H7i includes memory for 1 training event and uses replaceable coin cell battery. Customer itself can update new firmware to device when available. H7i is used with comfortable and soft heart rate strap.”

This suggests store and forward technology will be included for at least one activity. Although Polar don’t need to store and forward, due to their 5kHz mode, store and forward is a much more reliable way to guarantee complete data when used for in water activity. This could also suggest that high definition data capture will be present. I’ve mentioned this before as a possible future feature on these devices, and with BTLE there simply isn’t enough bandwidth to transmit hi-def heart rate on the go. This would drain the battery quickly and serve no purpose since the data is not useful while in the activity. Waiting to upload later makes complete sense, however, since that would allow great analytics of heart data and the single large burst of data would not run the battery down the way constant transmission would. Either way, this device has memory for one activity, and there must be a reason for that!

Posted in Cycling, Multisport, Polar, Running, Swimming
9 comments on “Polar H7i
  1. naiboo says:

    great news, looking forward to see a v800 successor soon!

    • lusty says:

      I think a lot of us are excited to see what Polar does next. I just hope they have their development sorted and supply chain ready for launch. The 920XT and Fenix didnt keep the v800 down, Polar did. I was going to buy one but by the time they were abailable there were lots of loud complaints and it was clear the features weren’t there. I really want to see them deliver something solid this time.

      • naiboo says:

        yeah i was really disappointed by the V800 when it was released because a lot of promised features were delayed or canceled.
        Bought the M400 right when it was released, with the updates (trainingload, running cadence, etc) it´s like a small V800 but only without barometric alt and a little less battery lifetime.

        But now i want:
        barometric and longer battery lifetime, already thought of buying a V800 in the special edition since the prices are now rather ok, but i already felt Polar is holding something in the pipeline… Let´s see what they publish…

  2. Adam says:

    Could it be similar to the Wahoo TickrX where you can store workout activities on the chest strap, then sync it over Flow when you are done? There are times that I just need a chest strap, and don’t care about having anything on my wrist such as a CrossFit class.

    • lusty says:

      Yes I think that’s probably one of the features. It does specify one activity in memory though so a sync will be required after each activity.

  3. Alan says:

    Please let me know if this becomes available or you formally test it.

    • lusty says:

      I don’t test things, the manufacturers aren’t keen on all this rumour stuff usually, although I’ve never asked them for test units. It wasn’t mentioned alongside the M600 so almost certainly will be announced at Kona Ironman in October with the v1000

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