I have confirmed that all functions are working, but the battery in the Kuku Band is dead, so I haven't been able to test it. (It was working fine when used) The Power Up Timer, Kuku Battle, and Kuku Band all have instruction manuals. The price listed is for the entire set, but items can be sold separately. Please let me know if you are interested in individual items. There are no noticeable stains, but these items were used by a child, so please understand. ^ ^ - Kira Kira 2nd Grade Power Up Timer, with cards (1,111 yen) - Kuku/Kanji Battle Machine (888 yen) - Bath Battle! Kuku Roulette (444 yen) - Kuku Song Band (666 yen) - Research Pen (333 yen) - Keyholder (333 yen) ※ ( ) Individual price