Plantronics CS351N/A SupraPlus Wireless Headset. 

My reference: BC700296 

CS351N/A SUPRAPLUS WLS HDSET 
Office professionals with phone-intensive responsibilities can now move about the office in unmatched comfort and with premium audio quality. Built on digitally encrypted DECT 6.0 technology, the Plantronics SupraPlus Wireless CS351/A headset system combines the clarity of traditional corded technology with the mobility of wireless, so conversations can continue up to 300 feet from a desk phone.
Product Description Plantronics SupraPlus Wireless CS351N/A - headset
Product Type Headset - wireless - DECT
Recommended Use Corded phone
Headphones Mono Headphone 

Headphones Form Factor Semi-open
Connectivity Technology Wireless - DECT
Microphone Boom
Microphone Operation Mode Mono
General
Product Type Headset - DECT
Recommended Use Corded phone
Additional Features: mute button, answer/end button, volume control
Headphones
Headphones Type Headphone - monaural
Headphones Form Factor Semi-open
Connectivity Technology Wireless - DECT
Microphone
Type Boom
Microphone Operation Mode Mono
Wireless Link
Transmission Range 300 ft

ACTUAL Photos are included here, what you see is exactly what you will get for,   all parts are original Plantronics parts, Item is checked and paired successfully as shown in a green light on the top of the base unit as you can see