If you have a really good high end remote like the Harmony One, you will have access to all functions. With regard to functions, this is a really low end, extremely simple home theater system. There are no special or really technical functions you need to know. Everything is clearly marked and color coded for hook up. If you have a remote you have access to everything needed to operate this system. Don't worry about a manual but if you still need one, try and find another Audiovox mini system that is close or similar. You will find many of these little systems are very similar and perhaps a manual for another system will make you happy. Good luck or maybe get a new system, just as cheap that will have everything in the box. This system is really not worth saving.