?Features:
This universal tuner is a great helper to keep your instrument in tune.
With Auto， Auto-Hi， Manual， Sound Cue and Sound on Sound tuning modes.
Tuning of virtually any instrument to 9 classical temperaments: EQU， PYG， MTE， MTD， WRK， KLN， VAL， YNG， and KRN.
Two LCDs and one encoder wheel for more accurate calibration.
LCDs with backlit provide excellent visibility.
With input and output jack.
Built-in microphone can tune without the connection of the pickup.
With an groove for coin to stand the tuner up.
Auto shut-off: if there is no signal for 5 minutes， the tuner shuts off.
Auto save functions: settings are saved upon power off.
Powered by DC 9V or 3V (2 * 1.5V AAA batteries) (not included)

Tuning Accuracy Indicator:
Sharp: The needle moves to the right side， and the "#" indicator will light;
Flat: The needle moves to the left side， and the "b" indicator will light;
In-tune: The needle moves to the middle， and the "△" indicator will light.
Sound Cue Mode: It will give a standard tone after it detects any tone which is close to the standard tone.
Sound on Sound Mode: Out of tune: There is a rapid tone and the "#" !#!amp!*! "b" will flash quickly
?????????????????????????????????? Approaching the correct pitch: The tone and the flashes will slow.
??????????????????? ? ? ? ? ? ? ?? In tune: A steady tone and the "△" will light.

Specifications:
Color: Black
Type: Universal tuner
Tuning range: E0(20.60Hz)-D8(4699Hz)
Tuning modes: Auto(E0-C6)， Auto-Hi(E2-D8)， Manual(E0-D8)， Sound Cue(C2-C7)， Sound on Sound
Flat: none， b， bb， bbb， bbbb
Reference frequency: A4=400-499Hz (1Hz steps)
Temperament key (transposition range): C C# D D# E F F# G G# A A# B
Detection accuracy: 0.1 cent
Numeric display resolution: 1 cent
Meter display resolution: 0.25 cent (FINE mode)
Sound accuracy: 0.1 cent
Standard tone: C2(65.41Hz)-C7(2093Hz)
Temperaments: Equal tone(EQU)， Pythagorean(PYG)， Mean Tone Eb(MTE)， Mean Tone D#(MTD)， WercKmeister III(WRK)， Kellner(KLN)， Valotti(VAL)， Young(YNG)， KirnbergerII (KRN)
Input: 6.3mm (1/4") mono
Output: 6.3mm (1/4") mono
Power: DC 9V (AC adapter) or 3V (2 * 1.5V AAA batteries) (not included)
Item size: 14.5 * 5.5 * 2.5cm / 5.7 * 2.2 * 1in
Item weight: 155g / 5.5oz
Package size: 20 * 6.5 * 3.5cm / 7.9 * 2.6 * 1.4in
Package weight: 174g / 6.1oz

Package List:
1 * Universal tuner
1 * Protective soft velveteen case
1 * User Manual (English !#!amp!*! Chinese)

Note:
The AC adapter and batteries are not included.