This is the Pactrade Marine Stainless Steel LED Navigation Green Starboard Red Port Light that is made of Polished Stainless Steel 316 Housing and is suitable for most boats usage. LED Color: Red and Green. LED: 1pc (1Wx2). LED Beam Angle: 120 Degrees. This product features the vertical mount navigation lights where green starboard is 112.5 Degrees and red port is 112.5 Degrees respectively. Its visibility is 1 (ONE) Nautical Mile (NM). Working Voltage: 12V DC. Wattage: 1W (Red), 1W (Green). Effective Lumen: 95LM (Green) and 20LM (Red). It has a waterproofing and dust-proofing standard of IP:66. This product is CE and RoHS certified. The color and dimension shown in the listing are only for reference and may vary among devices used for viewing. Product Dimension (for 1 side): 3-1/2" x 2". Thickness = 1/2". Item Number: PE011028SS.