Wzxksoac Preamp for Guitar Pickup- Musical Instrument Pickup Featuring Volume& Tone Control Functionality

Long-endurance: power supply of 2 x CR2032 button cell ensures it continuously works for nearly 80 hours; and it is convenient to replace batteries. Hassle-free to Install: just a few simple steps can install the sound control module of soundhole with included adhesive pads. High Quality: the pickup with a piezo pickup stick can connect external amplifier via the cable that has 1/4 inch jack, provide and clear sounds. Easy to Use: it is easy to control volume, , treble and phase via key and knobs, to acquire wanted mixed voice; and a light indicates battery status. & Portable: small guitar pickup, measures 8 x 6 x 3cm in size and about 2.50oz in weight, suitable for acoustic guitar.