Formerly named Moon Agogo, PH 3.9 features a modern interior designed around comfortable seating and low, atmospheric lighting. The space is arranged to ensure clear views of the central stage, where nightly dance performances take place. The bar area offers a selection of local beers, imported spirits, and house cocktails.

Entertainment is built around choreographed routines from a team of dancers, with music ranging from recent chart hits to classic favourites. Themed nights and special events often appear on the calendar, introducing new elements to the regular schedule. These occasions may include guest performers or interactive shows, setting the venue apart from traditional agogo establishments in the area.

The atmosphere attracts a varied clientele, including both tourists and residents from Pattaya. The setting and entertainment style encourage visitors to relax and stay for extended periods. Its position on Beach Road places it among many of the city's well-known nightlife destinations.