The WST-640G/C/U AutomaticGuitar Tuner makesguitar tuning a breeze、 thanks to its versatile design. The gorgeous tuner includes a high-sensitive vibration sensor and a sturdy clip that goes onto the headstock. It is easy to use. Make the tuner stand to power it on. And when it lies down or there’s no signal input、 the tuner will automatically power off. The large backlit screen display gives you even more visibility when you need it most. Don’t hesitate to get one now!                                    <p>Features</p>            <ul><li> Versatile design makes guitar tuning a breeze</li><li> Include a high-sensitive vibration sensor and a sturdy clip</li><li> Easy to use、 no complicated buttons</li><li> Power on automatically when it stands up</li><li> Power off automatically when it lies down or there’s no signal input</li><li> Large backlit screen display for more visibility</li><li> Compact、 lightweight design for portability</li><li> High accuracy、 reliable for beginners and professionals </li></ul>                                                            <p>Specifications</p>            <table width="100%" border="0" cellpadding="0" cellspacing="0"><tbody><tr><td width="131"> Color</td><td width="365"> Black</td></tr><tr><td width="131"> Dimensions</td><td width="365"> (1.69 x 0.98 x 1.26)" / (4.3 x 2.5 x 3.2)cm (L x W x H)</td></tr><tr><td width="131"> Weight</td><td width="365"> 0.81oz / 23g</td></tr><tr><td width="131"> Tuning Range</td><td width="365"> A0[27.5 Hz] ~ C8[4186 Hz]</td></tr><tr><td width="131"> Tuning Mode</td><td width="365"> Guitar</td></tr><tr><td width="131"> A4 Range</td><td width="365"> 440Hz</td></tr><tr><td width="131"> Accuracy</td><td width="365"> ÷1 cent</td></tr><tr><td width="131"> Tuning Method</td><td width="365"> Auto</td></tr><tr><td width="131"> Power Supply</td><td width="365"> 3V(CR2032) Lithium Battery</td></tr><tr><td width="131"> Model</td><td width="365"> WST-640G/ C/ U </td></tr></tbody> </table>                                                            <p>Package Includes</p>            <ul><li>1 x Guitar Tuner</li><li>1 x Manual</li><li>1 x Battery</li></ul>