The Big O2 features two removable bullet vibes-- one with a steady-state single speed that is oriented vertically for better clitoral contact, and a two-setting horizontally-oriented bullet that can be worn behind the testicles if so desired. The stretchy ring is made of phthalate-free SEBS elastomer, and the internal bullets are made of hard plastic.
Uses 4 x LR1130 batteries (included, 2 for each vibe). Comes in clear, blue, or purple-- though the stock varies, so we'll send whatever color we have on hand when you order.