Super Junior' Leeteuk, Donghae, Eunhyuk will release their first travel diary.

This 'Swiss Diary' will focus on their vacation to Switzerland for the filming of 'One Fine Day', which will feature the three's travel information about various attractions at the place as well as their honest thoughts while travelling.

The book will go on sale on October 19th while the pre-orders will begin via online bookstores on the 12th.