Features:<br />Multifunctional Metro-Tuner with built-in amplifier and drumbeats? compact size and powerful function.<br />0A(27.5Hz)-8C(4186.01Hz) tuning range? 410-450Hz A4 frequency? suitable for acoustic guitar and other similar instruments.<br />Supports tuning the instruments via 6.35mm input jack or built-in microphone? very flexible to use.<br />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.<br />Metronome mode allows you to adjust tempo? beat? rhythm and tap according to your needs.<br />Built-in 40 rhythm patterns? and supports 40-208 beats/min tempo adjusting.<br />Built-in distortion effect? and supports distortion degree adjusting.<br />Dual power supply choices: DC 9V battery or DC 9V power adapter.(both are not included)<br />3.5mm headphone jack; 3.5mm AUX IN for connecting MP3 and other audio devices; guitar input volume control.<br /><br />Specifications:<br />Color: White<br />A4 Frequency: 410-450Hz<br />Tuning Range: 0A(27.5Hz)-8C(4186.01Hz)<br />Tolerance: &plusmn;1 cent<br />Beat:0? 1? 2? 3? 4? 5? 6? 7? 8? 9<br />Flat: None? b? bb<br />Tempo: 40-208 beats/min<br />Model Sound: 4C-4B<br />Rhythm Pattern: 1-40<br />Input: 6.35mm input jack? AUX IN? MIC<br />Output: Built-in speaker? 3.5mm headphone jack<br />Power Supply: DC 9V battery or DC 9V power adapter(Not included)<br />Item Size: 11.5 * 7.3 * 2.3cm / 4.5 * 2.9 * 0.9in<br />Item Weight: 110g / 3.9oz<br /><br />Note:<br />Power Adapter and battery are not included.<br /><br />Package List:<br />1 * Metro-Tuner<br />1 * User Manual (English &amp; Chinese)<br><img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I3068/I3068-1-27ff-tOLR.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I3068/I3068-1-27ff-rCSw.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I3068/I3068-1-27ff-CbMP.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I3068/I3068-1-27ff-LOBU.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I3068/I3068-1-27ff-C38o.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I3068/I3068-1-27ff-QJQ7.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I3068/I3068-1-27ff-TBV3.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I3068/I3068-1-27ff-OnII.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I3068/I3068-1-27ff-j1Ns.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I3068/I3068-1-27ff-JnoV.jpg" /><br>