1. Five-Band EQ - Volume control, presence control, bass control, middle1 control, middle2 control, treble control, tuner power on/off button. 2. Great tone and pickup range - The complete kit offers great tone and pickup range, designed to be installed in the body of any standard acoustic guitar. 3. Amplify acoustic guitar sound - The 5-band powered pre-amp pickup unit includes all you need to add a pickup to your acoustic guitar and amplify its sound. 4. Easy to read - LCD display, easy to read. Professional guitar tuner with auto and manual tuning mode. 5. Frequency, power - Frequency response: 20Hz - 20kHz, power: Powered by 6F22 9V battery (not included) Color: Black with red edge Material: Plastic + iron Package contents: 1 x Pickup 1 x Piezo pickup cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.