Batteries are NOT included Feature: Each band provides 18Db+/- range to help find favourite tone This equalizer can exponentially improve the range of sound The output will be transformed into a more warm and natural sound True bypass design to minimize the tone loss LED power indicator Specifications: Brand: JOYO Frequency band: 100Hz, 200Hz, 400Hz, 800Hz, 1.6MHz, 3.2MHz Color: Black Package includes: 1 * 6 Band Equalizer