This Wolverine WIOS 5.8 speaker system has a powerful sharp sound that is sure to impress. This system comes with a transmitter, two speakers and a remote. Initial setup took around 15 minutes - there are several boxes to open and I do recommend you read the instructions before use. Unfortunately, there are THREE units (transmitter and two speakers) that will need to have an electrical outlet to function; unless you have access to 12 AA batteries (6 for each speaker). The remote control takes two AAA batteries and NO batteries of any type are included. The speakers are wireless which is nice but they will still need an electrical outlet to function unless again, you install batteries. For test purposes I used a familiar music internet program and used the Bluetooth function on my phone to connect to the speaker system. (This also has line-in audio input.) My initial reaction to the sound was that it was quite dim and I was very disappointed. I decided that perhaps I had too many appliances running at the same time (thus competing with the sound the speakers were emitting) and decided to give the speaker system another chance. I relocated the speakers and turned off a couple of appliances and hooked this up again. This time I was blown away and couldn't believe the sound that was being generated. I could clearly hear the sound throughout the house and the music I chose to play sounded simply amazing in every room! The speakers are pretty neat because not only do they have a handle to carry them around, they also have ambient lighting that can be turned on with the touch of a button. The latter looks pretty awesome at night. This system is also suitable for outdoor use and you can bet that I'll be carting this gem of a system to the beach this summer. 5 star review!