*Item Number AR5064-57E Caliber No. 8826 power Solar power eco-drive Accuracy ± 15 seconds / month Duration Solar power 12 months thickness 3.88mm Case size Width 38.0mm Case material stainless Case surface treatment Duratect DLC (black) Band material / type Stainless steel Tri-fold push type Band adjustable size 146-206mm Glass Sapphire glass (clarity coating) Waterproof performance Water resistance up to 5 bar Design function Used dial sapphire glass function Charge prohibition temperature detection function Overcharge prevention function Can move for about 12 months when fully charged 202107 release