The Shure blx9500 is a portable ceiling speaker with 100 Volt and 8 ohms, it has 3 hooks that will hold it on the ceiling. Ideal for Church, Mosque, Stadium, Office, School, House, Conference Hall, and many more. JGood quality teaching type electronics keyboard for learners. It has 54 sweet tone keys. It has what every learner need to learn on keyboard. It comes with power adaptor microphone. The shure blx9500 is a portable ceiling speaker with 100 Volt and 8 ohms, it has 3 hooks that will hold it on the ceiling. Ideal for Church, Mosque, Stadium, Office, School, House, Conference Hall, and many more. JGood quality teaching type electronics keyboard for learners. It has 54 sweet tone keys. It has what every learner need to learn on keyboard. It comes with power adaptor microphone.