Feature:1. Clear calls can be achieved by broadband audio solution for you even in a noisy environment. What's more, antiacoustic technology can protect your ear from overloud sound.2. BusinessGrade broadband headset is equipped with acoustic protection technology as well as digital signal processing technology, thus it can achieve more clearer calls.3. Adjustable USB headset with a 330degree rotating arm microphone and a 330degree rotating head clip, which is convenient for various wearing methods.4. The headset is equipped with soft protein artificial leather ear cushions for comfort and hygiene, and with an adjustable headband, it will not feel uncomfortable for longterm wear.5. All parts of the earphone are made of highquality materials, so it is light and durable, and the reinforcement line is designed for Kevlar, which can withstand harsh environments.Specification:Item Type: Telephone HeadsetMaterial: ABSRotatable Swing Arm 330Rotatable Head Clip 330Speaker Parameters:Sensitivity: 1053dB (At 178mV 1kHz)Impedance: 15015 (1kHz)Frequency Characteristics: 100Hz-10kHzDistortion: 5% (At 178 mV 1kHz)Microphone Parameters:Directivity: Single PointSensitivity: 402dB (2.0V, 2.2K, 1kHz)Distortion: 5% (At 4.5V 2.2K 1kHz)Frequency Characteristics: 200Hz-6kHzCurrent Consumption: 100-500AApplication: Suitable for USB-Connected devices, for Windows 2000/7/8/10 / XP / Vista, for OS X Book and most of the leading UC platforms and soft phones. Very suitable for Skype chat, business, call center, conference call, listening and speaking, dragon talk, online courses, web seminars, etc..Package List:1 x Telephone Headset1 x Manual