Description Pickup, tuner and equalizer system for ukulele. Piezo ceramic pick-up function. Chromatic tuner with LCD display. 3 bands EQ (Bass, Middle, Treble). With volume control knob and battery indicator light. Input Impedance: 22MOhm Frequency Response: 20Hz-20KHz Control range: Bass --+/-12dB at 100Hz;Middle--+/-12dB at 300Hz;Treble --+/-12dB at 10KHz Power supply: 2 * CR2032 Batteries (not included) Colour: Black material: plastic Size: 5 * 4 * 3cm and 3.2 * 3.6 * 3.1cm Package Contents: 1 * Pickup System 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.