BG-40K-2A Regin BG-40K-2B Regin Band Ring (BG-40K / 600K) Upper Band Printing (BG-40K / 600K) Lower Band Printing (BG-40K / 600K) Face Printing (BG-40K) EL Backlight (BG-600K)   BG-40K-2C Regin BG-600K-2A Regin (EL: Blue Green) BG-600K-2B Regin (EL: Blue) BG-600K-4 Regin (EL: Pink)