You are getting a Comedy and Tragedy Mask pendant.
You have an option to add a Swarovski crystals birthstone charm . And you can replace the Snake Chain necklace with lobster clasp to key ring or large stainless steel rhodium plated adjustable bangle (from 67mm to 74mm).
The charm comes with a bail that will fit Pandora bracelet or any bracelet up to 5mm thick (key ring option does not include the bail like the charm or necklace option, it will come with an O ring).