If you've been looking for a headset with a microphone, then your search is over! That's because our product has cool design, the headset with enclosed design, excellent sound insulation effect, which can meet your needs. Features -Color:Black -Material:ABS, sponge and PU -Size:16.00X13.50X4.60cm/6.29X5.31X1.81in - quality microphone makes this USB phone headset more durable. -It provides communication and is durable and stable over a long period of time. -Super lightweight cell phone headphones fit all head sizes, comfortable to wear. -Reduces unwanted background noise for clear conversation, brings you an amazing audio . -Great for online courses, Skype chat, call center, conference calls, presentations, and more. Specification -Frequency response range:20- (Hz) -impedance:32 () -The sensitivity:110 ( ) -The distortion rate:1 (%) -Wire length:1.6 ( ) -The loudspeaker diameter:32 (Φ mm) -Sensitivity:105±3 -Frequency Range: 20 Hz-20kHz -Microphone Sensitivity:-38±3 -Directionality: -directional -Headset Jack & Cable Length 1) 3.5mm (1 plug): 1.6 +0.152) USB: 1.8 ±0.153) 3.5mm : 1.6 ±0.15& Separate USB cable :1.6 ±0.15 Package list: 1 x Headphone