How many generations has superjunior applied for the baton?

1, the first generation: released in 2007, produced by South Korean company S Entertainment in cooperation with Japanese company AvexTrax.

2. The second generation: released on 20/0/0, manufactured by China company eselent and sold in China.

3. The third generation: released on 20 16, independently produced by SMEntertainment Company of Korea, divided into two colors: "SapphireBlue" and "PearlSapphireBlue".

4. The fourth generation: released in 2020, also independently produced by the Korean company SMEntertainment. Using wireless charging technology, it supports Bluetooth communication, light conversion and other functions.