2.4GHz Wireless Headphones Call Center Earphone On Ear Headset with ENC Noise Reduction Microphone Adjustable Headband Volume Control with Charging Dock ( #: V9756 )

Features:
2.4GHz Wireless Connection:
Supports 2.4GHz wireless connection, with USB receiver, no driver needed, plug and play, supporting up to 10 meters of wireless transmission distance.
Multi-purpose Headphones:
Fits for making office business conference calls, call center phone calls, online courses, language learning, playing games, listening to music, etc.
Noise Reduction Microphone:
External 180° rotary microphone with ENC noise reduction technology reduces environmental sound, enhances human voice, ideal for clear conversation.
Ergonomic Design:
Lightweight design, adjustable headband length, soft ear pad provide maximum wearing comfort, suitable for different head size wearing.
Long Battery Life:
Built-in rechargeable 300mAh lithium battery, 2 hours charging, can provide 20-40 hours of listening time. Comes with charging base, convenient and quick charging.

Specifications:
Frequency Range: 2.402GHz-2.480GHz
Operation Range: 10 meters
Frequency Response: 20-20KHz
Sensitivity: 108±3dB
Impedance: 40mm, 32Ω, 20mW
Mic Frequency Response: 10-28000Hz
Mic Sensitivity: -40~-45dB
Mic Impedance: 2.3KΩ
Battery Capacity: 3.7V 300mAh
Working Time: 20-40 hours
Standby Time: about 100 hours
Charging Time: 1-2 hours
Color: Black
Item Size: approx. 17.2*17.0*6.7cm/6.77*6.69*2.63in
Item Weight: 92g/3.24oz
Charging Base Size: 7.8*7.3*3.0cm/3.07*2.87*1.18in
Charging Base Weight: 69g/2.43oz
Package Size: 17.6*14.7*6.9cm/6.93*5.78*2.71in
Package Weight: 250g/8.82oz

Package List:
1 * On-Ear Headset
1 * USB Receiver
1 * Charging Base
1 * Charging Cable
1 * User Manual (English)