Acoustic Guitar Pickup System for DIY installation, featuring phase control, built-in tuner, low profile control knobs, low battery indicator, and volume control with Bass/Mid/Treble control. The system includes a pre-wire pickup for solder-free installation and a combined battery box with preamp. The product size is 55 x 55 x 20mm and weighs 53g. The package includes 1 x VT1 Pickup and 1 x User Manual.