The D'Addario chromatic Micro Soundhole Tuner is a must - have for acoustic guitar, ukulele, and other acoustic instrument lovers. It cleverly hides inside the instrument's soundhole, allowing you to tune discreetly. The non - marring universal mounting clip makes installation a breeze, stress - free and simple. With a highly sensitive piezo transducer, it directly senses vibrations from the soundboard, giving you a super fast and accurate tuning response. Its bright multi - colour display is easy to read in any environment. It's incredibly small, convenient, and accurate, so you'll definitely want one for each of your acoustic instruments! Features: Ideal for acoustic guitars, ukuleles, and other acoustic instruments; Fast and accurate response; Multi - colour display; Calibration range from 410 - 480 Hz; Designed to work with soundboards up to 0.150' (3.81MM) thick.


Using this D'Addario Micro Soundhole Tuner is easy. First, use the non - marring universal mounting clip to attach the tuner inside the soundhole of your acoustic instrument. Make sure it's firmly in place but don't apply too much pressure. When you start playing your instrument, the highly sensitive piezo transducer will pick up the vibrations from the soundboard and show the tuning status on the multi - colour display. Just look at the display to see if your instrument is in tune. Regarding the calibration, you can adjust it within the range of 410 - 480 Hz according to your needs. As for maintenance, keep it clean and dry. Avoid exposing it to extreme temperatures or humidity. When not in use, you can store it in a safe place. Also, be careful not to scratch the display or damage the mounting clip. With proper use and care, this tuner will serve you well for a long time.