This Al ⅴ lero Martln watch is waterproof and has a water depth of 50 meters. Tenmani brand is an internationally renowned luxury brand in Italy and one of the top ten luxury brands in the world. Founded by the famous Italian designer Mr. Alviero Martini in 1980s, its most famous is a luggage product designed with ancient maps as patterns, commonly known as map bag. Map travel bags named after him have been popular in Europe for decades, and their products have been extended to handbags, bags, fashion, accessories, stationery, watches, glasses, home and many other fields.