SJKJ said..
Sometimes it needs some moisture between the skin and the heart rate strap. Usually a good lick of the strap will do it (which is preferable to someone licking your chest...then again).
ive had tomtoms. his has a hr monitor in the watch.
sadly Andrew you have to slightly wet the skin, but if you sweat or dip your hand in the water it drops out.
I found it the most useless gps hrm watch ive ever tried and took it back next day after trialing it for 2 hrs
just get the normal tomtoms with chest strap hrm.
for me the best hrm watch is the polar m400. accurate and I cant remember a time the hrm dropped out
