Features:
Multifunctional Metro-Tuner with built-in amplifier and drumbeats, compact size and powerful function.
0A(27.5Hz)-8C(4186.01Hz) tuning range, 410-450Hz A4 frequency, suitable for acoustic guitar and other similar instruments.
Supports tuning the instruments via 6.35mm input jack or built-in microphone, very flexible to use.
Built-in piano sound(A/Bb/B/C/C#/D/Eb/E/F/F#/G/G#) for you to tune piano based on the standard pronunciation of notes.
Metronome mode allows you to adjust tempo, beat, rhythm and tap according to your needs.
Built-in 40 rhythm patterns, and supports 40-208 beats/min tempo adjusting.
Built-in distortion effect, and supports distortion degree adjusting.
Dual power supply choices: DC 9V battery or DC 9V power adapter.(both are not included)
3.5mm headphone jack; 3.5mm AUX IN for connecting MP3 and other audio devices; guitar input volume control.

Specifications:
Color: White
A4 Frequency: 410-450Hz
Tuning Range: 0A(27.5Hz)-8C(4186.01Hz)
Tolerance: ±1 cent
Beat:0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Flat: None, b, bb
Tempo: 40-208 beats/min
Model Sound: 4C-4B
Rhythm Pattern: 1-40
Input: 6.35mm input jack, AUX IN, MIC
Output: Built-in speaker, 3.5mm headphone jack
Power Supply: DC 9V battery or DC 9V power adapter(Not included)
Item Size: 11.5 * 7.3 * 2.3cm / 4.5 * 2.9 * 0.9in
Item Weight: 110g / 3.9oz

Note:
Power Adapter and battery are not included.

Package List:
1 * Metro-Tuner
1 * User Manual (English & Chinese)