Fast & : Experience tuning with +/- 1 cent accuracy. Housed in a mini pedal 's designed to fit on any pedalboard, it lets you to spend less time tuning and more time playing. Easy to Read: This tuner pedal is suitable for wide range tuning. LED Light indicator shows the working state. Deluxe LED display leads clear results of tuning. Tuning range is A0(27.5Hz) ~ C8(4186Hz). True Bypass: Improved analog circuit, real signal, true bypass for tone coloration. Solid Construction: This tuner pedal is made of high quality alloy, durable and sturdy. Mini size will save lots of space on your pedalboard. It's suitable for seven strings guitar or string . NOTE:The 9V adapter is not included. Material: alloy colour: White Package Contents: 1 x pedal Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.