Model: Rowin Pedal Tuner LT-9011, A mini high precision tuning pedals, can be accurate to 0.5 cent.2, Chromatic guitar tuner which is suitable for wide range tuning, LCD display shows clear results of tuning3, True bypass, real signal, no loss of tune4, Works with most Electric or Electro-acoustic instruments in cluding seven string guitar or five string bass.5, Notice: there is not power adapter included, you need to buy oneFeatures: 1.Mini chromatic tuner pedal with durable metal case. 2.Suitable for wide range tuning. With LCD display, easy to read tuning information. 3.True bypass, real signal, no loss of tune. Specifications: Material: Metal Tuning Range: A0(27.5Hz)-C8(4186Hz) Precision: 1cent Detection Method: Audio Signal Input Tuning Method: Auto Display: LCD Screen Power Supply: DC 9V Item Size: 9.5 * 4 * 5cm / 3.7 * 1.6 * 2in Item Weight: 150g / 5.3oz Package Size: 12 * 6.3 * 6.5cm / 4.7 * 2.5 * 2.6in Package Weight: 215g / 7.6oz Note: The power adapter is not included. Package List: 1 * Tuner Pedal 1 * User Manual (English)