SH 300 The SH 300 is an ultra lightweight headset, all purpose monaural solution for longer conversations. It is the stylish and high-quality solution for users who value great comfort and top speech quality in any professional situation. Features Ultra light independent over-the-ear headset with ergonomic design for maximum comfort Noise Cancelling microphone blocks out a great amount of ambient noise, making your voice easier to understand Ideal for professionals who need to keep in touch with what is going on around them and for extended periods of use Delivery Includes Carry bag Headset storage hook, clothing clip Microphone windscreen Technical Data Microphone Noise Canceling Frequency response 100 Hz - 3400 Hz Sensitivity -34 dB Distortion Less than 1% Speaker impedance ~300 Ω Frequency response 300 Hz - 3400 Hz Sound pressure Max. 104 dB limited by ActiveGard Weight of headset 29 g / 0.67 oz Wearing style Over-the-ear (left or right ear) Personal fit 3 adjustment speaker rings Cable length 1 m / 3.3 ft Kevlar®* reinforced Connector Easy Disconnect Ear-cap size Regular ø 20 mm / 0.78 inch