The tuner is a precision production process, excellent workmanship, stable performance and perfect match with your needs for serious guitar. The beautiful and elegant appearance of the guitar will make you feel very cool. The portable tuner is made of high quality material with black color plated surface, compact size, good performance and long service life. Padded clip won't damage your instrument. 360 degree rotating display, convenient for user. Working with built-in vibration sensor and is powered by 1x CR2032 battery. Easy-to-read red to green status indicator.