Air Knight K4 12E Eternal-S

Air Knight K4 12E Eternal-S, or Air Knight K4 12Expand Eternal-S, is a Stamina type released in Beyblade Burst Turbo as a SlingShock System Beyblade. Air Knight K4 was released with two colors being blue and black.

Also See

 * 1) Air Knight K5 8' Valor-H