I bought it and used it for less than a week, so it’s fairly new still in original box, comes with all wires and microphone and phone cable but no adapter/wall charger.

Includes: 1 standard 2.5mm headset jack.

* Noise cancelling headset for cell phones, office phones, landlines, computer dictation and VOIP. Over-the-head design with two leatherette padded speakers.

* Units come with 3.5mm to 3.5mm cable. For devices without 3.5mm audio jack user will need 3.5mm to lightning adaptor or 3.5mm to USB-C adaptor.

* Features

* Boosts your voice and suppresses background noise.

* Universal audio connector allows you to connect to almost any cell phone using one of many adapters.

* Can be used with a PC / laptop with our PC adapter (sold separately)

* *Freedom to communicate anywhere!

* Even in the noisiest environment, theBoom Pro2 patented noise cancelling technology delivers clear speech. You can have that important conversation no matter where you are.

* - Cars / Convertibles

* - Office space

* - Construction sites

* - Home/Home Office

* - Call centers

* - Airports

* - Commuting

* - Mobile professionals

* - Speech recognition

* *Privacy even in a crowd!

* With theBoom "O", you will be heard loud and clear even at a whisper. Since there's no need to speak over surrounding noise, you can keep your conversations private and avoid disturbing people around you.

* -mobile phone

*         -in public transportation (trains and buses)

*         -in the ball park, race track, concert

*         -in the office or home

* -landline phone in the office / home

*        -cordless phones

*        -using 2.5mm headset jack

*        -using Plantronics amplifier

*        -using headset/handset switch

* -computer

*        -use with your favorite voice recognition software for dictation

*        -communicate using Voip

*        -listen to music from a cd or mp3 player(mono)