The H-I stands for High Intensity - this isn't the string of lights you wrap around your patio umbrella. This is serious, waterproof, glassed-in MEGA lumens, illuminating up to 40-feet of water around your board. Your stand up paddle experience will never be the same. Board models and sizes vary, and prices start at just $1900 for a new NightSUP H-I board. Inquire about options.