Ponta 7-Henge Tezuka Characters Chain Collection
At the 78th Tokyo International Gift Show in 2014, they announced Ponta and Tezuka Productions would collaborate and release several products featuring Ponta’s mascot and Tezuka characters. Ponta is a point earning service that allows you to accumulate points and use at stores and other services (Lawson, KFC, AU, etc) nationwide. Products featured Ponta-kun, their mascot, transformed into Tezuka characters. This set of chain accessories can attach to your phone or other items using a lobster-clasp or earphone jack. They included seven characters in this collaboration, including Astro Boy, Phoenix, Black Jack, Princess Knight, Leo, Hyoutantsugi, and Unico.
These were around 715 yen each when released in October 2015.