attwood 3-Mile Anchor and Masthead Light Vertical and Horizontal Mounts 1.3 watts at 16 VDC Compatible with both Attwood and Perko mounting holes Attwood's proprietary optics design draws only 1.3 watts at 16VDC - the lowest power draw of any 2-mile all-round light on the market today! Lights are rated for 50,000+ hours of use and feature a 10 year warranty.