W257BQ (99.3 FM) is an American radio station serving the Charleston, South Carolina, area with a mainstream urban format simulcast on the HD-2 channel of WXST. This station is under ownership of the Charleston Radio Group subsidiary of Saga Communications. Its studios are located in Charleston (east of the Cooper River) and the transmitter tower is in Charleston as well (west of the Ashley River).

WSPO changed to sports talk in 2009 and began using the translator W257BQ at 99.3.

On October 22, 2011, WSPO changed their format to regional Mexican, branded as "Ritmo Caliente 99.3" and simulcast with W257BQ.

In 2012, WSPO changed to a tourist information format, ending the simulcast.

In 2013, W257BQ changed their format from Regional Mexican "Ritmo Caliente 99.3" to an Urban Contemporary format "99.3 The Box". This move brought "The Box" back to the area. The station originally aired on WCKN 92.5 as "92.5 The Box" from 2010 until 2011.

99.3 The Box is Charleston's home to the nationally syndicated morning show The Breakfast Club weekdays from 6:00AM until 10:00AM featuring Charleston's very own Charlamagne Tha God.

On September 6, 2017, the sale of the station to Saga Communications was complete.

• Facility details for Facility ID 149563 (W257BQ) in the FCC Licensing and Management System
• W257BQ at FCCdata.org

32°49′27″N 80°00′10″W / 32.82417°N 80.00278°W / 32.82417; -80.00278