Listen to 700 Milion Hello Kaun online. 700 Milion Hello Kaun is a Hindi language song and is sung by Monu Upadhayay. 700 Milion Hello Kaun, from the album 700 Milion Hello Kaun, was released in the year 2025. The duration of the song is 4:00. Download Hindi songs online from JioSaavn.