Korg DT-4 Chromatic Tuner
The Korg DT-4 chromatic tuner uses bright LED's to display three types of tuning modes.
It has a wide detection range of A0-C8 (88 notes) and a calibration range of 410Hz-480Hz which can be adjusted to support various concert pitches. The built-in condenser mic lets you tune acoustic instruments. Includes two AAA batteries for verifying operation.