Experience the safest and easiest way to maintain the beauty of your luxury watch. Veraet's gentle water-based cleaning formula leaves no film or residues, and since it contains no ammonia, acid or abrasives, this fresh-scented spray is ideal for all metals and crystals. Spray your watch once a week or bi-weekly, then rinse with water to maintain your watch's factory finish. Each 4 ounce bottle lasts an average 2-4 months and is intended for water-resistant watches only. This environmentally-friendly and non-toxic spray is also ideal for cleaning fingerprints and light dirt from sunglasses, pens, knives, cell phones and computers.