The Qwik Tune Guitar Professor GP-1 is a compact and lightweight tuning pipe made of plastic. It features a jack input and a vintage design. This all-in-one tuner also functions as a chord finder and pitch pipe. Suitable for acoustic, acoustic-electric, bass, electric, and travel guitars, it weighs 2.0 oz. Made in China, the Qwik Tune GP-1 is a reliable and versatile tool for guitarists.