Please add this item to shopping cart instead of clicking "Buy Now" if you also want to purchase other products from us. Sony SR521SW (379)Silver Oxide watch battery in original packing, 5 pcs. Long expiry date, 05/2018 or later. Please note the expiry date is only printed at the top and at the back of the card. When you buy 2pcs, the packing you receive may not have the expiry date printed on it. 05/2018 is the earliest expiry date in our current stock. Voltage: 1.55V Fast postage from Hong Kong not China. Payment Postage fees and Shipping Item will be shipped immediately on the same or next business day of receiving full payment. Postage fee: FREE air mail world-wide. Takes about 10-20 working days. Item must be paid for within 5 days unless arrangement is made prior to listing ends. If you have any questions, please feel free to contact us. We hope you enjoy your shopping experience with us