Item Type: USB Business HeadsetModel: H360D-USBMaterial: ABSColour: BlackType: Single EarPlug: USBScope of Application: For Devices with USB InterfaceSpeaker Parameters:Sensitivity: 1053dB (at 178mV 1KHz)Voice Coil Impedance: 15015 (at 1KHz)Frequency Characteristics: 100Hz-10KHzDistortion: 5% (at 178mV 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: 100-500APackage List1 x Headset1NOISE REDUCTION: Built in high definition microphone, can be arbitrarily twisted, make your voice loud and clear. Provide clear dialogue even in noisy environments. The noise is smaller and the sound is clearer. 2COMFORTABLE THROUGHOUT THE DAY: The mobile headset provides you with an ultra light wearing experience. The soft ear cushions and flexible headband will not cause any burden to your ears. 3USB PLUG: This black USB single ear customer service headset is suitable for USB plugs; plug and play, no driver required, and easy to use. Used for devices with a USB interface. 4HIGH QUALITY MATERIALS: The earphones are designed with sturdy structure and materials to ensure super performance and make them durable. The long headphone cord provides flexibility of movement. 5EXTENSIVE COMPATIBILITY: Suitable for devices with USB interface. Ideal for home offices, call centers, telemarketing, insurance, customer service, online courses, Skype chats, conference calls, etc.