Specifications: -Weight: 35g -Color: Black -Tolerance: ±1 Cent -A4 Frequency: 440Hz -Signal Receiver Mode: Clip -Power: 1 * CR2032 battery (Not included) -Tuning Range: A0 (27.5Hz) – C8 (4186.00Hz) -Tuning Item: G (Guitar), B (Bass), V (Violin), U (Ukulele), C (Chromatic) Instructions: 1. After installing the battery, long press the switch button to turn on or turn off the tuner. 2. Short press the switch button to make a change of tuning item between G (Guitar), B (Bass), V (Violin), U (Ukulele), C (Chromatic). 3. Put 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. Item Size: 4.4 * 3.5 * 3.5cm Low: Indicator is on the left, LCD screen in white High: Indicator is on the right, LCD screen in white In-turn: Indicator is in the middle, LCD screen in green