Plantronics HW520-CIS is a binaural Cisco compatible headset (double ear) over-the-head design. it's certified to work with all Cisco IP phone 69xx, 79xx, 89xx, 99xx models just to name a few. Plantronics HW520-CIS has an unique designs with an ergonomic fit that is durable, lightweight, and comfortable for all day use. The noise canceling microphone provides high quality audio so conversations will be heard clearly by the listener. The design of the Plantronics HW520-CIS is built with metal joints that deliver durability and reliability, and a flexible microphone with visual positioning guides for precise positions. HW520-CIS is ideal for telephone intensive users, such as Helpdesks or typical salesman. 

Certified compatible with Cisco IP model phones:

• Cisco IP 68xx
• Cisco IP 69xx
• Cisco IP 78xx
• Cisco IP 79xx
• Cisco IP 88xx
• Cisco IP 89xx
• Cisco IP 99xx

Key Features:

• Includes direct cable for the Cisco IP phones
   
• Noise canceling microphone
• Adjustable fit enhances for wearing comfort
• Plantronics QD allows walk away convenience function
• Built in visual tactile positioning guides enable precise and quick microphone positioning
• Wideband audio delivers richer, clearer conversations
  SoundGuard technology protects from noise spikes and listening fatigue
• Laser welded construction and metal joints provide unbeatable toughness Extraordinary Service
• Plantronics 2-year warranty

<= This HW520-CIS packaged headset comes with a Cisco Modular Connection at the end. It plugs directly into your Cisco IP telephones headset port. No amplifier and additional cords are required.

For more detail information see Plantronics HW520 datasheet

Optional Plantronics HW520-CIS parts & Accessories:

Plantronics EncorePro Headband Support Pad

Plantronics HW510, HW520 Leatherette Ear Cushions (qty 2)

Plantronics HW520 Foam Ear Cushions (qty 2)

Plantronics HW520 Circumnaural Leather Ear Cushions