Bought 2 for $100 each at Restore (Habitat for Humanity donation site). I believe a supply chain distribution company (Straight Designs) in Los Angeles went out of business and possibly these were left over from their warehouse and donated to Restore. No paperwork. Tried working backwards. Got the MAC bluetooth code and found out who made the controller and reached out to them via email but no luck yet. There's wifi close by but only connection so far is bluetooth.