3-in-1 Device: can be used for acoustic and electric guitars, bass, ukulele, violin, mandolin, piano and like saxophone and trumpet etc. Versatile Tuner: The fast and accurate tuner boasts a wide range of A0-C8, various tuning modes, transposition settings, and pitch calibration. So whichever instrument you play, it's got you covered! Tap Tempo Metronome: tap tempo, and and rhythm patterns, this metronome will improve your timing in a of musical styles. Easy to Use: The intuitive JOG Dial let's you literally dial in your desired tempo quickly and easily. It also allows for making swift pitch selection in the Tone Generator, among many other functions. Super Easy to Read:Equipped with LCD color screen and led indicator making it very user friendly, especially in dark environment. Model Number: Instrument 3-in-1 Metronome Tuner. Type: Metronome Colour: blue Material: ABS resin Size: 107x65x15mm Package Contents: 1 * guitar tuner 2 * battery Only the above package content, other products are not included. Note: Light 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.