Feature: 1. Equalizer Display Area: Approx. 200 x 30mm / 7.9 x 1.2in. Equalizer Battery Specifications: 1 x CR1220 (Not Included). 1 x Equalizer. Item Type: Music Spectrum Level Light. Adjusting Sound Effects: Equalizers can be used to adjust special effects in sound, such as increasing bass effects and emphasizing vocals.
eBay