Alba Prestige AS9S29X Data WatchStrapMaterial Silicone The hour indices are coffin The hour indices are coffin shaped and share the same tone as the bezel battery operating time: *8 months on rechargeable battery (operation period with normal use without exposure to light after charge) *19 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Accuracy: ±15 seconds per month 12 24 hour format Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents 40mm Case Size Stainless Steel Case Leather Strap Screw Back Case Date Display Mineral Crystal 50 Meters Water Resistant the Alba AS9S29X maintains clarity and durability over time