Check the listing for details. Polk Audio 6.5" Component Speakers with Marine Certification *DB6502. Condition: Open box. Listed at 129.60 USD. Electronic Express eBay Listing Description Polk Audio DB+ Series 6.5" Component Speaker System with Marine Certification Everything you love about Polk's Dynamic technology - that rich, clean, full-range sound - is built into the marine-tough, yet ruggedly sophisticated, DB Plus series. And with its universal fit, it can be installed in any vehicle: automobiles, motorcycles, boats, ATVs - you name it. Key Features: High Performance Upgrade: Upgrade from your OEM speaker system toward a bigger, fuller, high-performance sound. Marine Certified: Built to last for cars, boats and ATVs with an IP56 rating and tested for Salt-fog, UV & Humidity. Universal Fit: Simple drop in installation for any vehicle including cars, boats, ATV’s -- you name it. Zero Tweeter Protrusion: A shallow tweeter design to ensure your factory speaker grille re-installs with ease for a flush, seamless look. Dynamic Balance Technology: Patented process that guides material selection through rigorous testing that identifies and cancels out unwanted resonant frequencies. What's in the box: 2 x Woofers with Grill2 x Tweeters2 x CrossoversInstallation Hardware User Manual Specifications: Pieces: 6 Type: 6.5" component Driver Complement: 6.5" Tweeter Complement: 0.75" Cutout Dimensions: 5.0" Mounting Height: 0.41" Mounting Depth: Top: 1.77" Bottom: 2.23" Peak Power Handling: 300 W Continuous Power Handling: 100 W Nominal Impedance (ohm): 4 Frequency Response (Hz): 35Hz-23kHz Grille Height: 20 mm Sensitivity (dB): 92