Simple and up-to-date design, convenient to carry. Small compact product size, two buttons operation. Clip-on design with large opening for easily fixing on the instrument. Bright TFT color screen display, accurate and fast tuning with dynamic display. Dual 360 degrees & 180 degrees rotatable clip for best viewing angle. Built-in rechargeable battery, quickly charges with included cable. 3 minutes auto power-off function saves energy. Tuning items including guitar, cello, saxophone, trumpet, etc.