Instead of that, grab this one, price less than two euros. Is smaller, has stereo (for two speakers 5W Output) and comes with connectors. Range seems to be about 15-20 meters. Keep in mind you can fit this inside your tamiya/heng long tanks and make them able to play custom sounds and music! Yes, custom user sounds and music in your tank for about one pound!
You will need to add a voltage regulator though. How much? 70 cents. That should be the one to use. Has two output of 5V and 3A (but only one is needed). The bluetooth module works with a maximum of 5v, and has a maximum draw of 2.5A For my battlefield I have one of this boards. 2 euros free shipping. So I can adjust the voltage for different things. 3V for leds, 5V for the bluetooth module, 8V for the smoke generator.
I hope somebody finds this interesting, because Im really excited
