I use the strap while jogging along with a Wahoo stick to an iPhone. The interaction works properly.
Buyer I wavered between the fully flexible and this belt. I do not mind the longer plastic part, the electrodes can be easily wash off after training and elastic band there in the piece, if you want it because even replace times.
Once had a similar polar belt and was thus along well, in which here you can but replace the battery yourself.
Everything was great, fully satisfied - Five Stars!
