Bosch NC450D Dynamic Normally Open Low Z Handheld None

Its excellent voice response characteristics also make it an excellent choice in quiet areas. 200 ohm impedance matches low impedance inputs. Noise-cancelling dynamic hand microphone with push-to-talk switch for paging. NC450D’s noise-canceling design makes it particularly effective for use in noisy locations. Tailored response for voice intelligibility Rugged ABS construction Two-position momentary slide switch Unterminated, 4-conductor, 2 shielded, black neoprene, coiled cord 12" (304mm) Retracted 6' (1.8m) Extended Soft rubber lip guard Noise-cancelling