How to sync my Iphone 5c to the Jam Plus speakers?

I have a brand new IPhone 5c and bluetooth HMDX Jam Plus wireless speaker. It says it's totally universal, but whenever i turn the Bluetooth on on my phone it will not connect.

I'm sure there's a way

Is there a button on the speaker that says connect or is it turned on or is it charged

There's a way to do it but I don't know how?