It is a bold hoop style that allows you to feel different when wearing it. The earring gives a gorgeous mood by mixing the matte and glossy lines.. BTS Jimin wore this during Japan BTS The Best online showcase. What's Inside. Component: 1 Spaceship Earring. SIze: (W) 1.4 cm x (H) 3 cm. Weight: 15g. Material: Brass + Silver Post (gold plating)