JEDIR Date,Quartz, Silicone Watchband and Waterproof Men's Watch MN3002GBK-1 Functions: hours, minutes, seconds, calendar, multi-function time, 30 meters waterproof. mineral wear resistant crystal glass mirror Surface material: copper surface Occasions for gifts:Advertising and promation,business gifts,holiday,housewarming,birthday,travel. The best quality, the most favorable price, the best after-sales service, battery life: 2-3 years.