Bose | Bose® Solo TV sound system | Home theater | TV speakers
From the photo on that page it appears the system has a remote.. Howevr what I'd do is go to that page, enter ZIP code, and follow instructions to get a sales jerk to demonstrate how to work it.
You may also be able to track down an owners manual for it via that page or one very close to it (linked to from it).
Something I suggest for all RV sub-systems such as this your dash radio, home theater, microwae, Furnace, water heater, Fridge, Converter, Water Pump, and .. Well basically everything (you can skip the door, yes there is an owner's manual for my door). is go to the device maker's web site, find the support link and DOWNLOAD the owner's manual to your hard drive.
Way lighter than the 20 pound bag of books my RV came with.