Lee Junghwan (이정환; born March 20, 1992 in Busan, South Korea), better known by his stage name Sandeul (산들), is a South Korean singer. He is best known as the main vocal of the boy group B1A4. He made his solo debut on the 4th of October 2016 with Stay As You Are. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.