How do I open a Plantronics M70? Volume keys not working...

I'm trying to see if the Plantronics M70 (single ear bluetooth headset) is reparable... I bought it long enough ago to have lost the receipt, and everything works except the volume keys... Hoping I can find a lose wire or solder that I can fix myself, but hoping someone else has done this first, so I know if it's repairable without breaking the case.

Edit: I got bored and cracked it open anyway... Mostly plastic, two main latches near the middle... Anyone else trying, the top half above the white comes off, not the bottom with the speaker...

Pretty sure I broke some plastic, but since the volume buttons were connected by a small ribbon cable that had already broken, it's a lost cause... I managed to get the volume turned up, but now it's glued shut, so that's it... When it dies, it dies...