eMeet Luna Bluetoothe speakerphone equipped with the latest noise reducting technology eliminating background noise that may appear, such as air conditioning, keyboard & chair pulling sound, etc. eMeet Luna USB speakerphone could also be cascaded with the eMeet cascading cable. The cascading function makes Luna conference microphone and speaker more flexible and can easily carry out in both the small meetings that having under 8 attendees and the medium meetings with up to 12 participants. (Daisy chain cable needs to purchase separately.) What's in the box? eMeet Luna Speakerphone *1 USB Cable *1 Dongle *1 AUX Cable *1 User Manuel *1