DBS6902W/DBS6902B:
2-way waterproof stereo speakers: 6" x 9"
Compeltely Waterproof
For Marine or Car Use
Polypropylene cone with rubber edge
1/2 High Compliance Polymer Tweeter
Molded ABS plastic Basket
Voice Coil:1.2"
Max Power :180 Watts 
Magnet：20 Oz 
Frequency Response:40Hz-20KHz
Impedance:4 Ohms
Sensitivity:91 dB
Dimensions(mm):D198*268,d154*228,H113,h87