Moozikpro Acoustic Guitar Pickup CONTACT MICROPHONE FOR TUNERS  Eliminates external noise and precisely picks up the vibration WIDE 35 MM CLIP OPENING - Easy to open, it will clamp firmly to the instrument DELICATE SILICONE PAD-Classical guitar pickup protects your instrument from any scratches or damage MULTI-INSTRUMENT ACOUSTIC GUITAR PICKUP - Great for string, woodwind and brass instruments 1/4JACK & 40"L CABLE - Perfect for tuner that offers an audio input jack