Features:
Selectable Auto-tuning, manual-tuning, and sound modes.
Wide, Modem tuning range: Tunes Low B strings on Guitar & Bass.
Very wide range of reference tones (from Bass Low B, to one octave above guitar's Hi E).
Adjustable calibration (435~446Hz, 1Hz increments).
Built-in microphone.
1/4" input & output jacks.
Auto Power-Off after 20 minutes, with memory back-up.
2 AAA batteries, included.
Available in Black only.