The D'Addario Equinox Headstock Tuner, in its USB rechargeable version, is a game - changer for tuning guitars, basses, and other stringed instruments. It tunes using vibrations instead of sound. With a highly sensitive piezo sensor and a large multi - colour LED display, it lets you tune easily and accurately in noisy and dimly lit places where most other tuners struggle. The tuner has a pivoting display and a Micro USB port for charging. D'Addario's innovative design offers an intuitive interface, an easy - to - read display, and top - notch tuning accuracy. It comes with a 0.3m Micro USB - B Charging Cable and a manual, and has a battery life of 24 hours.

Using your D'Addario Equinox Tuner is a breeze. First, attach it to the headstock of your guitar or bass. Since it uses vibrations to tune, just make sure it's in good contact with the instrument. Then, pluck a string and look at the large multi - colour LED display. The display will show if the string is in tune. The pivoting display allows you to adjust it to a comfortable viewing angle. When the battery runs low, use the included 0.3m Micro USB - B Charging Cable to charge it through the Micro USB port. It can last up to 24 hours on a single charge. As for maintenance, keep it clean by gently wiping it with a soft cloth. Avoid exposing it to extreme heat or moisture. Refer to the manual for more detailed instructions and troubleshooting tips.