The Blue Diamond is a Saturn version Astrojax with all blue, supercharged LEDs! Three Saturn batteries per ball are included (installed). Incredible displays of light trails are waiting to be discovered or photographed. Use the continuous mode to create linear trails of intense blue light or use the strobe/disco setting to see and create thrilling bright blue scattered patterns of light. This Astrojax is so bright it can almost be used as a flashlight! The included string is a neon day glow orange edition. It is ultra sensitive to black light, causing laser-like string effects. Even without the use of a black light, the string will pick up a trace amount of light from each ball. Each set of Astrojax comes with an aj-dos (Docking Station). This cool holder allows the player to carry or store their Astrojax. Wrap the string neatly around aj-dos and keep in a pocket or even on your belt or use the loop-through hole and wear around your neck. The tip of the aj-dos allows the player to switch the lights between off, continuous mode, and disco mode.