Jabra Biz 1500 Duo (Binaural) QD is a professional grade corded headset with noise cancelling microphone, covers both ears

Frequency Response 20 - 4500 Hz - Sensitivity 115.5 dB/mW

http://cdn.cnetcontent.com/8e/3d/8e3ded6e-c92e-42ca-bf6d-62c2e2b42354.pdf

http://cdn.cnetcontent.com/b3/c3/b3c3ef7e-c2cd-471a-81f7-fb3c5f4d4dc1.pdf

http://cdn.cnetcontent.com/db/bd/dbbd80be-b663-4614-8434-31f22ab2c454.pdf

Evolve2 65, Link380c UC Stereo w/ Desk Stand Black

Jabra Evolve2 65 UC Stereo - headset - with charging stand

Portable electronics, phone, computer - communication

Jabra Evolve2 75 - USB-A UC with Charging Stand - Black

Headset - Bluetooth - wireless, wired - USB-A

Portable electronics, computer - communication

Mute button, reject call, voice assistant, forward call, answer call

Frequency Response 20 - 20000 Hz - Sensitivity 84 dB/mW

http://cdn.cnetcontent.com/03/a1/03a16b4e-990f-49f4-a775-9dea6bf46473.pdf

http://cdn.cnetcontent.com/3e/79/3e79873d-a5fb-4067-8adf-82544c58882c.pdf

http://cdn.cnetcontent.com/8d/a7/8da76527-107d-4ea6-ad6f-8d6f71f29c19.pdf

http://cdn.cnetcontent.com/bf/48/bf48fca4-5a2f-4603-afdd-6a4361735737.pdf

Jabra Engage 50 II - (Engage 50 II Link) USB-C UC Stereo

Jabra Engage 50 II - (Engage 50 II Link) USB-A UC Stereo

Jabra Engage 40 - (Inline Link) USB-A UC Stereo

Answer/end, mute, programmable button, volume

Jabra Engage 40 with Inline Control USB-A UC Stereo

Jabra Engage 40 - (Inline Link) USB-C UC Stereo

Jabra Evolve2 Buds USB-C- UC Wireless Charging Pad

Jabra Engage 55 SE Mono, Link400c, UC, Stand

Jabra Evolve 65e UC - Earphones with mic - in-ear - behind-the-neck mount - Bluetooth - wireless - USB - noise isolating

Volume, answer/end, play/pause, next/previous track, reject call

http://cdn.cnetcontent.com/3f/e1/3fe18e97-31a8-4300-bdf5-9578f1b7ca72.pdf

http://cdn.cnetcontent.com/66/80/6680d359-7bdd-4897-8c42-288a08530e21.pdf

Headset - Bluetooth - wireless, wired - USB-C