Casio Collection Standard Black [Casio] (Old Model) AEQ-110W-2AJF Men's Watch,

The battery pre-installed in the watch is a monitor battery to check the watch's functions and performance. The battery (monitor battery) installed at the factory has been consumed for the period from the time of product shipment until the time of purchase by the customer, and may not meet the battery life stated in the instruction manual. Target: Men Package contents: Main unit, other items, instruction manual, warranty card (included in the instruction manual) Reinforced waterproof for daily life: 10BAR