If your model is IPX7 (waterproof):
available online, most speakers in this category follow a standard set of operations for pairing, charging, and control. bts766 speaker manual best
The BTS766 contains an FM tuner, but the manual explains it poorly. If your model is IPX7 (waterproof): available online,
If you are unsure if you are missing parts, a standard BTS766 package includes: a standard BTS766 package includes: