Yoon Jeong-han

Jeonghan, born Yoon Jeonghan (Hangul: 윤정한) on 4 October 1995 (age 21) in Seoul, South Korea. He is a member of the South Korean boy group Seventeen, belonging to the sub-unit, Vocal unit.
He was given the nickname "Angel" because of his birth date (in Korea, dates are written in (YY)YYMMDD format, making his birthday "(19)951004" (4 October 1995.); the number '1004' and the word 'angel' have same pronunciation in Korean). Before his début, he trained under Pledis Entertainment for little over two years, making him one of the members with the shortest training period in the group.
He has appeared in an on-line program Seventeen TV and a television reality show Project Seventeen before his mainstream début, along the rest of the members.