Cherub DT-10 Automatic Digital Tuner  (Chromatic: Yes, Black)

DT-10 is a tuner designed for acoustic drums. With Cherub's original advanced algorithm, it detects the note and relatived tension value in real time. MARK function sets the reference pitch, and the meter will tell you to tighten or loosen the tension screw to balance the drum head. Flexible clamp fits almost all drums!