Approx. battery operating time: 7 months on rechargeable battery (operation period with normal use without exposure to light after charge) 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Case / bezel material: Resin / Stainless steel Resin Band Mineral Glass Neobrite Shock Resistant Carbon Core Guard structure 200M Water Resistant Bluetooth Connectivity Tough Solar Power Free Shipping or In-Store Pickup