Multiple ultraviolet anti-reflective coated layers and a scratch-resistant sapphire glass crystal.
Easily surpasses all basic water use needs up to 660 feet, such as swimming, surfing, snorkeling, boating and water-skiing. Also, made for extreme water sport enthusiasts that scuba and deep sea dive.
Swiss quartz chronograph movement for precision timing with a large date window.
LITHIUM ION BATTERY
Ten year rated rechargeable lithium ion battery for lights comes with a plug in AC charger and USB adapter. Secondary 4-year silver oxide rated battery for watch timekeeping.