The obvious reason is that swimming involves mid-swim without stopping.
the next section of your session accordingly, it's tricky to get mid-swim without stopping.
Form's smart goggles, which lasts last month, address the problem by putting heads-up display in the goggles themselves, so you can see your stats any time you like. 50m or 100m.
To that. The goggles display two stats at one time, one of which is total time and the second you choose from a long list of options including split time, distance, stroke rate, distance per stroke, pace per 50m or 100m list you can soon add heart rate. Polarity OH1 arm strap to attach to the goggle's strap to take a form reading from your temple.
The goggles are only designed swimming pool and paint the GPS needed to record open-water activities accurately.
With 16 hours of battery life, the goggles will last a couple of weeks on a single charge even if you 're swimming for an hour every day. You'll probably need to get up to the $ 199 price plus shipping costs, because unlike multisport watches, these goggles will not track anything else. The goggles so do not come bundled with Polar's heart rate monitor, so you'll have to buy that separately. If you do, opt for the OH1 + which includes the clip needed to attach them to the goggle's strap.
As well as being smarter than your average pair, the shape goggles so come with a range of nose bridges so you can find the but that's a 45-day guarantee that allows you to send them back to you. They are not available from UK retailers at the moment, but do not ship to the UK.
Buy from Form | $ 199 (approx £ 165), plus shipping