?<strong>Features:</strong> <br>This portable tuner can be also used as a watch. <br>It is a great assistant to keep your chromatic£¬ guitar£¬ bass£¬ and ukulele in tune. <br>A4 frequency from 430-450Hz to meet your better need. <br>360 degree rotatable head offers you the best viewing angle. <br>With a watchband£¬ it is easy to fix on the instrument. <br><br>Tuning Accuracy Indicator: <br>Flat: The sign is on the left; <br>Sharp: The sign is on the right; <br>In-tune: The sign is in the middle. <br><br><strong>Specifications:</strong> <br>Color: White / Black / Yellow / Lemon green (optional) <br>Tuning scale: Chromatic£¬ Guitar£¬ Bass£¬ Ukulele <br>Flat: N/A£¬ b£¬ bb <br>A4: 430-450Hz <br>Power: 3V CR2032 lithium battery (not included) <br>Package size: 5 * 3.5 * 3cm / 2 * 1.4 * 1.2in <br>Package weight: 20g / 0.7oz <br><br><strong>Package List:</strong> <br>1 * Tuner <br>1 * Watchband <br><br><strong>Note:</strong> <br>The batteries are not included. <br>There are operation instructions on the packing box.