i have one but it is tempermental
You have to take the battery in and out for it to work (the on/off button is broken) and sometimes you have to fidle with teh battery to get it to come on. I had it on Coby so its been used alot, think there is a loose wire inside it that causes the button not to work.
But once the battery is in it works brilliant still, picked up the heartbeat on this one at 8+ weeks.
I have half a bottle of gel with it and a carry case, you can have it if you can put up with the loose conection, just postage money.
x