Built-in Tuner: This acoustic guitar pickup system features a built-in tuner, allowing you to easily maintain perfect pitch wherever you are. Whether you're rehearsing, performing, or recording, you can quickly calibrate your tuning to every note is precise. Quick Installation: The piezo pickup is designed for standard configuration, making the installation process simple and fast, with no soldering required. This not only saves time but also reduces the complexity that can arise during installation, allowing you to start using it more quickly. Comprehensive Control: The onboard preamp system offers a variety of control options, including volume, bass, mid-treble, brilliance, filter, and phase switch. With these controls, you can fine-tune your sound according to different playing environments and personal preferences, achieving the best auditory effect. Long Battery Life: After replacing the battery, the guitar pickup can operate continuously for about 90 hours (battery not included), ensuring long-lasting performance. Whether you're in a prolonged performance or an extended practice session, you 't need to frequently replace the battery, minimizing interruptions. User-Friendly Design: With an intuitive control interface and straightforward installation steps, this classic acoustic guitar EQ tuner piezo pickup is suitable for users of all levels. Whether you're a beginner or an experienced musician, you can easily get started and enjoy the high-quality sound and convenient operation it provides. Color: Black Material: Plastic+Electronic Component Package Contents: 1 * Guitar EQ Tuner 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.