2-Wire Acoustic Tube Cloth Fiber Earpiece Clip-On PTT / Mic for HYT TC320 Radios. Compatible with Hytera TC-320 Two-Way Handheld Radios. Braided Fiber Cloth Series - Acoustic Tube 2 Wire - 1st wire to ear piece, 2nd wire to noise cancelling microphone and PTT. Increased strength and durability. Quick disconnect clip – secures the earpiece and provides additional cable strain relief. Twist off acoustic tubes – hygienic quick and easy swap between multiple users sharing equipment. All kits include 2 ear tips - clear and skin colored. Cloth Comfort - lays tangle-free. Noise Cancelling Microphone. 36 Month Rapid Replacement Warranty.