--Coaxial speaker unit

--Carbon fiber water-proof cone for woofer

--High elastic surround

--13 core and PEI 0.05mm thick 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