The BOSS TU-05 is a game - changer for stringed instrument players. It offers reliable and accurate tuning right on your instrument's headstock. With a large, high - contrast color display, it's easy to read the tuning results. There are four useful tuning modes - chromatic, guitar, bass, and ukulele - so it can meet various tuning needs. It comes with a long - lasting rechargeable battery, saving you the cost and trouble of constantly swapping batteries. The battery can run continuously for up to 10 hours. The auto power off feature helps save battery when the tuner is not in use. You can charge it with a standard USB power adaptor using the included USB cable. It has compact dimensions of 42mm (1 - 11/16') W x 48mm (1 - 15/16') D x 58mm (2 - 5/16') H and weighs 35g (2oz) with the battery.
Using the BOSS TU - 05 is a breeze. First, clip it onto the headstock of your stringed instrument. Then, select the appropriate tuning mode according to your instrument - chromatic for general use, guitar for guitars, bass for basses, and ukulele for ukuleles. If needed, you can adjust the calibration from 431 to 449 Hz. The large, high - contrast color display makes it easy to see if your strings are in tune. When you're done tuning, the auto power off feature will kick in after a while to save battery. To charge it, simply connect the included USB cable to a standard USB power adaptor. For maintenance, keep it clean and dry. Avoid dropping it or exposing it to extreme temperatures. If you take good care of it, this tuner will serve you well for a long time.
