Using Method: 1. After installing the battery long press button to turn on or turn off the tuner. 2. Short press the button to make a change of tuning item between G(Guitar) B(Bass) V(Violin) U(Ukulele) C(Chromatic). 3. Position the tuner by clipping on the part of musical instrument which vibrates distinctly adjusting the tuner until you can see LCD display clearly. 4. Then play your musical instrument. 5. The string No and note name will be showed on the screen together when tuning. a. Low: Indicator is on the left LCD screen in white. b. High: Indicator is on the right LCD screen in white. c. In-turn: Indicator is on the middle LCD screen in green.