Bright Bracelet

The Bright Bracelet is the transformation device that Ryoko uses to transform into her Ultra form, Yullian.

History
The device is first seen in episode 49 of Ultraman 80. Ryoko used this and transformed into Yullian to help Ultraman 80 defeat Plazma and Minazma. This was used once again in the final episode of the series for Ryoko to transform back into Yullian one last time and depart Earth with 80.

Transformation
To transform, Ryoko simply lifts up her right arm into the air and shouts "Yullian", then light covers her body to transform her into her Ultra Form.