Heart rate monitors?

Slimmasaurus

I'd really like to get a more accurate idea of how many calories I'm burning, as I know that the ones on the MPF are probably a little higher than what I'm actually burning.
The main activity I'd wear it for is cheerleading, as this doesn't even appear on the database, and it's a mixture of gymnastics, lifting/throwing girls around and dance. Is it possible to get one without a watch strap or anything? There's a strict no jewellery rule as it could injure someone if they fell etc.

Pickles11

I don't know if any without a watch because I would love to wear mine while playing soccer but I also can't wear the watch.