Compatible with Polycom: SoundPoint 300 301 335 430 450 500 (rev. E or later) 501 550 600 601 650 670 CX300 CX500 CX600 CX700 VVX300 VVX310 VVX400 VVX410 VVX500 VVX600 VVX1500. Super Durable: Precision design, quality plastics, unibody headband construction, superior quality microphone makes this call center headset sturdier and more durable.
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