Supports multiple tunings and different pitches: you can tune your instrument in chromatic mode or select a guitar/bass/ukulele/violin separately depending on how you tune your actual instruments, and you can also change the pitch from 430Hz to Adjust 450Hz to your liking (default pitch = 440Hz). Flat tuning for guitar, bass. Small sensitive tuner with a clear display: This vibration tuner is very responsive and ignores the background noise with a high accuracy of 1 cent, so it is also ideal for noisy environments. Very small and handy, but the screen is bright with large notes for easy reading, even at a distance. Easy to Use: One-button battery operation, auto-power with no operation in just 5 minutes from battery . The screen rotates 360 degrees and the clamp adjusts to 1" thickness until the tuner fits any angle of your instrument you wish to adjust. CE certified It has a low error rate less than 0.1%, significantly less than the industry standard. A note for beginners: Every clip-on tuner recognizes the frequency of the sound from the vibration of the instrument. When the note name on screen matches the actual instrument. Note that you keep loosening/tightening the string until you get the correct one on screen.