Check the listing for details. Battery Kit for Aqualung US Divers Matrix and Matrix Master Dive Computer. Condition: New. Listed at 8.58 USD. Battery Kit For: Matrix and Matrix Master Kit includes: 2 New, 3.0V Sony Lithium cell batteries 1 battery hatch O-ring 1 Tube silicon grease lubricant for O-rings (factory recommended) Components are brand new, sealed and meet all factory specifications. Ten year shelf life. All kits must meet your satisfaction or your money back! Shipping: We ship items within one to two days of receiving your order. Please use the shipping calculator to determine the rate to your location. We primarily use USPS First Class Mail and Fed-Ex Ground for larger items.We ship Monday through Friday. If you need the item(s) rushed to you please contact us.