Feature:

1. [HD Mic]‑Built in HD microphone which can be twisted discretionarily picks up your voice clear even in noisy environments.
2. [2.5mm Plug]‑Binaural corded headset 2.5mm plug; plug and play, no driver required, easy to use. For devices with 2.5mm headphone plug.
3. [Long Lasting Wearing Comfort]‑Telephone headset with soft ear pads and flexible head for long lasting wearing comfort.
4. [Ultra Durable]‑Binaural customer service headphones long headphone cable provides flexibility, and sturdy construction ensures durability.
5. [Wide Use]‑Double sided headset is suitable for home office, call center, telemarketing, customer service, conference calling, etc.

Specification:

Item Type: 2.5mm Business Headset
Material: ABS
Model: H390D-2.5VA
Colour: Black
Type: Binaural
Plug: 2.5mm Plug
Function: Call, Speaker Volume Adjustment
Applicable Scope: Compatible with devices with 2.5mm headphone plug
Speaker Parameters:
Sensitivity: 105±3dB (at 178mV 1KHz)
Voice Coil Impedance: 150±15Ω (at 1KHZ)
Frequency: 100Hz-10KHz
Distortion: ≤5% (at 178mV 1KHZ)
Microphone Parameters:
Directivity: Unidirectional
Sensitivity: -40±2dB (2.0V, 2.2KΩ, 1KHz)
Distortion: ≤5% (at 4.5V 2.2KΩ 1KHZ)
Frequency: 200Hz-6KHz
Current Consumption: 100-500υA

Package List:

1 x2.5mmBusinessHeadset