The Sabine STX1100 has these main features:

Transpose Function:
The STX1100 will display your note in any key. Great for band and orchestra players who want to see notes displayed in their scale as they tune, or for tuning your guitar with a capo.

Tone Generator:
The STX1100 generates any reference tone over a two-octave range so you can tune by ear, or use it as a training tool for pitch recognition.

Manual Calibration:
You can calibrate the STX1100 to any of 12 precise pitches from 435 to 446 Hz.

The Sabine STX1100 is the Original Chromatic AutoTuner & Tone Generator.

The best-selling chromatic tuner in the USA since 1991 (Music & Sound Retailer "Best of the Top Ten Award"), the Sabine STX1100 set the industry standard for professional chromatic tuners.
The STX1100 includes all of the functions needed for professionals and enthusiasts alike.
It is an indispensable tool for all musicians!

The STX1100 features fast, automatic note sensing and bright, easy-to-use LED display with contrasting LEDs. Along with ¼-inch In & Out Jacks, a Built-in Microphone, Automatic Calibration, Music Stand Mounts and Sleep-mode Battery Saver.