This Swiff clip-on chromatic tuner is perfect for guitar, ukulele, bass, and violin. The tuner works via the instrument’s vibrations, so simply clip it on to the instrument. This also means you can tune your instrument no problem even if you’re in a noisy setting. Easy to use power button. Press and hold for on/off, and simply click to browse the tuning modes. The tuner is suitable for all levels of playing, and being so easy and straightforward to use, it is perfect for younger children to start learning to tune their instruments. If left unattended for 5 minutes, the device will automatically turn off to save power.