Solar-ID's numbers are unique. Their size and visibility a tipping point for solar power house numbers. Come back to the web site soon and check for 4 inch solar powered letters to further your communication regarding your property, business, residence and other creative presentations. I recently saw them at a concert telling the band they were the best! A number 10 displayed on the concert's Jumbotron screen using Solar-ID numbers held up by concert goers instead of little flashlights. Fun!