XL
L
M
S
Anywhere access to PC communications.
The Blackwire 420 lets professionals enjoy crystal
clear PC audio no matter where work happens. Designed for extended wear, this durable,
stowable headset provides the freedom to experience PC audio, through a high-quality
headset, anytime, anywhere.
Blackwire
®
420
DurablE, portablE DEsign
• Folds flat and tucks into laptop bag
• Rugged design for reliability
• Travel case provides extra protection
supErior sounD quality
• Wideband for best PC audio telephony
• Full-range hi-fi stereo sound
• Noise-canceling microphone reduces
background noise
• Enhanced Digital Signal Processing (DSP)
provides more natural sounding voice
• Dynamic EQ stereo automatically adjusts
for voice and multimedia use
innovativE, usEr-friEnDly DEsign
• Adjustable headband for customized fit
• Call controls at your fingertips
• Simple USB connectivity
inCluDED aCCEssoriEs
• Travel case, provides a secure and
convenient transportation option
global CustoMEr CarE
Backed by Plantronics industry leading
global service and support.
800-544-4660 (US and Canada)
831-458-7700 (outside US)
©2012 Plantronics, Inc. All rights reserved. Plantronics, the Sound World graphic, Blackwire, SoundGuard, Spokes, and QuickAdjust
are trademarks or registered trademarks of Plantronics, Inc. Microsoft, Lync, and Windows are trademarks or registered trademarks
of Microsoft Corporation in the U.S. and other countries. Mac is a registered trademark of Apple Inc. Avaya is a trademark of
Avaya Inc. Cisco is a registered trademark of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. IBM
is a trademark of International Business Machines Corporation in the United States, other countries or both. 04/12
optiMizED for unifiED CoMMuniCations
Connects to
PC via USB
Compatibility with
Windows® or Mac® OS
Ideal for
Users requiring a portable headset for use with
PC audio, video, webinars, conference calls, live PC
presentations with desktop sharing, music, etc.
Audio performance
Dynamic EQ, microphone frequency response
100 Hz–8 kHz optimal for wideband voice telephony
(up to 6,800 Hz), hi-fi stereo output from 20 Hz–20 kHz,
enhanced digital signal processing (DSP), noise-canceling
microphone
Hearing protection
SoundGuard®: Acoustic limiting for protection against
sounds above 118 dBa
Limited warranty
2 years
Models
C420: UC Standard version built for UC applications
and softphones from Avaya®, Cisco®, IBM®, Skype®,
and more*
C420-M: Optimized for Microsoft® Lync
™
2010 and
Microsoft® OCS 2007
For more information about the Blackwire 420 Series or other Plantronics products,
please visit our website at plantronics.com
*Download the latest release of Plantronics Spokes
™
software to get one-touch call
answer/end with these softphones.
Adjustable
headband
USB connection
Soft, swivel-mounted
ear cushions
Swiveling
QuickAdjust
™
boom with noise-
canceling mic
Call answer/end,
mute, /-
