Marine LED Recessed lights, LED Marine Ceiling lights. DC12~63v low voltage best for 12V 24V 36V 48V Marine & Nautical Ceiling Lights, Recessed Mount Interior Lights. 4" LED downlight for car, bus and boats, 12 Watts led The ideal replacement for the conventional downlight, energy-saving up to 70%. Designed with advanced heat dissipation technology, used Samsung SMD LEDs. Dimension: Approx. 135mm(D)*27mm(H) Hole diameter: Approx. 4" (105~110mm) 120 degree beam Using Samsung 5730 SMD LEDs, Samsung SMD LED, a above 100lm/w,CRI>Ra80 Using top quality Acrylic cover instead of glass cover, The lighting is smooth and soft lighting. LED constant current driver adapter included.