tc electronic Guitar clip Acourse mode PolyTune Classic guitar clip on tuner with sound and polyphony modes and precise flash 精准的频闪模式 强大的复音调音 po polytune3 po TRUE BUFFER 迅捷的半音调音 une 三BONAFIDE PRECISE FLASHING MODE TC Electronic吉他调暗器 TC ELECTRONIC +/-0.02 Accurate stroboscopic mode