Silvertone STUN3 white clip on guitar, bass, uketuner, easy to read, rotates any direction.

Silvertone STUN3 white clip on guitar, bass, ukulele or mandolin tuner, small, easy to read, rotates any direction.  These are great little tuners, they are light and small, a bit smaller than other brands, but have a good display that is easy to read.  The screen stays a little dark until vibration is present, then it lights amber until in tune, then shifts to green.  Drop tunings and 1 hz variations from 440hz are easy to set with the controls in case you need to perform with a piano or other instrument that isn't at 440.  This tuner features auto shutoff to preserve battery life.