BOSS TU-2

The BOSS TU-2 is a stompbox chromatic tuner (a tuner in a pedal!) that delivers all that you'd expect from it.

Here are some of the features:
-BIG BRIGHT LEDS YOU CAN SEE ON STAGE (really important for a tuner!)
-special BOSS tuning system: the LEDs move slower as the string reaches perfect pitch, and faster if you get farther away from it
-adjustable reference pitch: from 438Hz to 445Hz
-a wide tuning range of 8 octaves
-several tuning modes including: chromatic, guitar regular, guitar flat, guitar double flat, bass regular, bass flat, bass double flat (personally, I prefer chromatic ALWAYS)
-the tuning modes and display style are stored in the memory of the device
-footswitch mutes, bypasses and shuts off LEDs to preserve power.

It doesn't have:
-BOSS' AccuPitch (some BOSS tuners have this, the tuner beeps when the string is perfectly in tune so that you may "maintain eye contact with your fellow bandmates"; even if it did, it wouldn't have been of much use)
-a mic (nor would anyone expect it)
-a beep to a reference pitch (ex: A440)
-a metronome

The things it doesn't cover are covered BETTER in the other BOSS tuners, the TU range being: BOSS TU-2, BOSS TU-12, BOSS TU-12H, BOSS TU-15 and, finally the TU-80 (which also has a nifty little metronome).