✔  Rotatable guitar tuner: 130 °rotating display, 180 °rotating base<br><br>✔ High sensitivity &amp; LED display: Quickly determining the accurance according to the sound<br><br>✔ Automatic off &amp; Convenience : One-button operation, just pressing the button on the top of the tuner to turn on/off, or tuning<br><br><br><strong>✔ Specification: </strong><br>   1). Tuning mode: Chromatic<br>   2). Tuning range: B0--B7<br>   3). A4 calibration: 436Hz-450Hz<br>        0-5 means A4 = 440Hz-445Hz<br>        6-9 means A4 = 436Hz-439Hz<br>   4). Tuning way: clip tuning automatically<br>   5). Tolerance: +/-1 cent<br>   6). Power: 3 V CR2032 battery (one piece) <br>   7). Material: plastic<br>   8). Dimension: display length (55 x 33 mm) <br>                           Length of the clip (54mm)<br>   9). Weight: 40g<br>   10). Applicable Instruments: Acoustic guitar, electric guitar, bass, violin, ukulele, and more.<br><br><br><strong>✔ Package included:</strong> <br>   1 x Fzone FT-16 Multi-Functional Clip Tuner<br>   1 x 3 V CR2032 battery Cable<br>   1 x Manual