GOHUOS Mens Sport Brown Leather Strap Waterproof Auto Date Calendar Quartz Wrist Watch Imported High Quality leather Band, durable and pratice, gives you a new classic definition. Multiple Function. Water Resistant& Calendar & Water Resistance. 30M waterproof design , good choice suitable for outdoor sports use. Japanese High quality quartz movement. Long Battery Life. If the pointers do not luminous, plesae put the watch under the sunlight or use a strong light lighting it.