Supports multiple tunings and different pitches: you can tune your instrument in chromatic mode or select a guitar or bass or ukulele or 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 percent , 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 or tightening the string until you get the correct one on screen.