The OP's question is perfectly reasonable. It doesn't warrant the kind of snide crap she's got in return from Dave, who seems to hang around the forum like a fart in a phone box on the off-chance he'll find someone to sneer at.
To the OP: if you hover over any poster's avatar you'll see a pop-up that includes an ignore button.
There's two from Mio - the Alpha, which is an hrm with conventional appearance (as linked above by FF), and the Link, which is just a bracelet with the sensor that streams the data, nothing more.
My impression is that with the Link any recording is done by the receiving device, ie, if I use it with a Forerunner, the Forerunner will do the legwork for saving the stats such as average, peak, carving it up into lap segments and so on.
It's the Link that I like the idea of. I don't need another hrm but an alternative to a chest strap that works with existing kit, well, I might possibly treat myself.