Used Yamaha O1V Digital Mixing Console

Used Yamaha O1V Digital Mixing Console.  Unit powered on and the screen says the internal battery needs replaced.  So we cannot test it beyond that.  We assume it works but are selling it as is needing service / the internal battery replaced. Image of the screen shows the messages.  Item may be returned for any reason.  Shipping is the responsibility of the buyer.  Includes manual.