Item Type: Binaural Headset Material: ABS Application: Suitable for devices that can be connected to 3.5mm interface, ideal for Skype chat, business, call center, conference call, listening and speaking, dragon talk, online courses, web seminars, etc. Rotatable Head Card 90 Rotatable Swing Arm 330 Speaker Parameters: Sensitivity: 1053dB (At 178mV 1kHz) Voice Coil Impedance: 15015 (1kHz) Frequency Characteristics: 100Hz-10kHz Distortion: 5% (At 178mV 1kHz) Microphone Parameters: Directivity: Unidirectional Sensitivity: -402dB2.0V, 2.2K, 1kHz Distortion: 5% (At 4.5V 2.2K 1kHz) Frequency Characteristics: 200Hz-6kHz Current Consumption: 100-500A Package List 1 x Binaural Headset 1 x Manual 1This phone headset is compatible with devices that have 3.5mm interface, 90 rotatable head, 330 rotatable microphone boom. 2Can achieve clear calls, and acoustic shock can protect your hearing. Professional PC headsets can be used in call centers and offices. 3With super soft protein leatherette ear cushion, adjustable headband to fit for different head sizes, ear cover rotatable, for all day long wearing. 4With HD audio sound, it can ensure clear calls even in a noisy environment. Wideband audio provides natural hearing. 5Reinforced for Kevlar cord is built to withstand demanding environment and protect against office chair wheels, sharp objects for long daily use.