This is the special version 12V AC / DC of our 12-Watt PAR38 LED Light Bulb. The special 12V AC / DC driver brings the brightness and energy efficiency of our 12-Watt PAR38 LED Light bulb to RV, Marine, Boat, and solar off-grid users. The 12-Watt LED Light bulb produces 800 lumen of light (equivalent to 75-watt Incandescent bulb) with using on 13.5 watts of power. If you replace a 75-watt incandescent bulb with this 12-Watt LED Light bulb, you will save $32.00 per year in electricity. If you use this bulb for 18 months, this bulb would have paid for itself in electricity savings alone. The best part is that this bulb is rated for 36,000 hours ( thats about 8-years if you use this bulb 12 hours a day for 30 days a month).