4 pieces, Lifespan 50,000 hours. High quality workmanship - durable - stylish look. Suitable for Campervan, Boat, Motorhome, Caravan, Yacht, Kitchen, Bathroom, Cabinet, WardrobeInstallation dimensions: Mounting hole: min. 2.3"(58 mm), max. 2.55"(65 mm). Diameter 2.75"(70mm), thickness 0.5"(12mm)Full Aluminum and Super slim design: Made out of full aluminum, Conducive to the heat dissipation of the LED chip board. Thickness 0.5"(12mm), lightweight and compact body fits narrow places. Shock and vibration resistantTechnical specifications: DC 12V, 3 Watt, 240 Lumen. Color Temperature 3200K(Warm White), Lighting angle 120, Energy class A++. Dimmable with PWM dimmer (12-24V Dimmer Switch ASIN B08SM3MKTS)Notes: Suitable for Camper Van Motorhome with DC 12V power supply. House power is AC110V-230V.You need a DC12V power supply to power them for home using. (Transformer is not included in the package)Colour Name: WarmEnergy Saving - Same illumination intensity, the power consumption for this LED light is more than 5 times lower than halogen light.Compact Design - Ultra thin design helps expanding your space, lower install requirements suitable for caravan RV, boat, motorhome, Campervan,yacht.Spring Clips Mount - Neat finish after installation. Spring clips, no screwing requires, mounting hole depth only 0.5", cutting hole 2.3"-2.5"(58-65mm)Replace Halogen Ceiling Lights - Easily fitted instead of ordinary 2.75 inch recessed light fixture. No additional accessories are required.Durable - No plastic, no die-casting, full aluminum body offers excellent heat dissipation, 50,000 hours lifespan LED chip.Dimmable - Compatible with DC 12v PWM type LED dimmer switch, dimming range from 0-100%.SpecificationInput Voltage: 12V DCLED Lifespan: 50,000 hours LightWattage: 3WLuminous Flux: 240 LumenCable length: 7 (18cm)Dimensions: Outer Dia 2.75", Inner Dia 2.3", Height 0.5"Color Temperature: warm white 3200K ;Lighting angle: 120 degreesMounting Hole: Dia Dia 2.3"-2.5"(58-65mm), Depth 0.5" (12mm)Weight: 1.8 ounces/eachNOTES: THIS CEILING LIGHT IS DIMMABLE.