Ogdni Acoustic Guitar Pickup-5 Band EQ Preamp Equalizer Pickup Acoustic Guitar Amplifier Digital Chromatia Tuner Piezo Pickup for Acoustic Guitar Accessory

["Professional acoustic guitar equalizer with tuner to improve their sound.","With bass,middle,treble,pres.brilliace,vounme and power control knobs,fit your different needs.","Power Supply: Powered by one 9V battery and with low battery indicator (battery is not included).with LCD chromatia tuning system","Easy To Install: Supplied with the pickup line, mounting screws, sticky plate and cable tie for easy assembly.","5 Band preamp piezo pickup is great accessory for electric acoustic and classic guitars."]