This is the Cisco Certified  Poly Savi 7210 + EHS Remote Answer package.  This Poly (formerly Plantronics)  wireless headset packaged together with Cisco Adapter (Cisco EHS cable).  Together this bundle package will provide you the ability to answer your Cisco IP phone remotely, up to 400ft away. The Poly Savi 7210 is an over-the-head style headset. Equipped with a noise canceling microphone, wide band audio, it's one of the best headset on the market today for the Cisco IP phone.  

Compatible with Cisco Phone 6945, 7821, 7841, 7861, 7942G, 7945G, 7962G, 7965G, 7975G, 8811, 8811, 8841, 8845, 8851, 8861, 8865

important note: do not order this package if your phone is not on the listed above or call if you are not sure

Key Features:

• Poly Cisco EHS remote answering adapter included.
• Answer and end calls remotely
• Up to 12 hours of battery time (talk time) 50 hours of standby
• Over-the-Head Mono wireless headset system
• 64 bit encryption DECT Security Certified
• Up to 400 feet wireless range
• Weights only 104g
• Wideband audio
• Noise-canceling microphone to block out background noise (about 60%)

For more information, see Poly Savi 7210 datasheet