Plantronics H51N Supra Noise canceling

Plantronics H31CD is a special modified version of the H31.  Plantronics H31CD boost the incoming audio level to make listening easier in noisy environments. Plantronics H31CD (part# 43674-01) is recommended for dispatch operators, air traffic controllers, military, stock exchange, 911 dispatch operators. The H31 C/D StarSet requires the Plantronics SHS1890 Adapter to connect to most Dispatch Consoles. Retail price $102.00

Key Features:

• Receiver Impedance (ohms, at 1 kHz): 600 ± 150
• Source Drive Impedance (ohms): 600
• 1kHz sensitivity (dBPa/V, ±4 dB): 20.5
• Flexible Eartube style
• Quick Disconnect feature
• Ideal for noisy environments, featuring a complete 6-Size eartip kit.
• Ideal for those who need a comfortable, convenient headset for noisy environments.
• The ultra-lightweight, StarSet headset rests comfortably behind the ear.
• Innovative design
• All day comfort
• Easy on, easy off

<= This headset has a Quick Disconnect end.

Also see Plantronics H31CD datasheet

Important Note: This headset requires the Plantronics M22 Vista amplifier or bottom cable between the headset and the telephone. call for assistance.