How is this bb serviced? Seems like it should be serviceable, but I'm not sure what tool is needed.

Instead of the bearings being held together by a retaining ring, the manufacturer opted to hold the bearings in the cup with a pressed-on cap. You could just clean it as-is, or if you want to install new bearings, you can pry off the cap. You would probably destroy the cap doing so, but you do not need it; it serves no functional purpose other than to ease assembly.

Thanks so much, I've already taken the caps off cleaning the bearings now.