Tested.

This BOSS guitar and bass auto tuner is a must-have for any musician. It features a digital display with LED screen that shows your tuning status. Compact and easy to use, it is suitable for both bass and electric guitars. The built-in microphone ensures accurate tuning, and it can handle flat, double flat, and open tuning.

The black BOSS TU-70 model is a high-quality tuner made in China. It is ideal for both beginners and professionals, and it comes with many useful features such as a chromatic mode and reference tone. This tuner is perfect for musicians who want to ensure their instruments are always in tune, without the need to worry about the condition of the item.