--Two frequency superior quality water-proof ceiling speaker.
--Wide frequency response.
--LRC low frequency is better as it has the back box.
--Carbon fiber water-proof cone for woofer
--Imported silk silver treble film
--Sound quality is delicate and powerful.
--The grille can easily be attached to the speaker by means of coil springs.
--Widely used in supermarkets, hotels, subways and so on.
--The Dustproof Level :IP 4X