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, and is made to be installed in the body of any standard acoustic Guitar. 3. Amplify Acoustic Guitar Sound - The 5 Band powered pre-amp Pick-up unit includes all you need to add a pickup to your acoustic guitar and amplify their sound. 4. Easy To Read - LCD display, easy to read. Professional guitar tuner Auto and manual tuning mode. 5. Frequency, Power - Frequency Response: 20Hz - 20KHz, Power: Powered by 6F22 9V battery (not included) size:9.8 x 5.8 x 4cm Material:Plastic + metal colour:black Package Contents: 5 x pickup 5 x Piezo pickup cable 40 x Mounting screws Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.