Casio Digital Calculator Databank Watch Battery Replacement DBC-610 DBC-611

How to change the battery on a Casio digital calculator watch. Tools required..... 1. #0 crosshead screwdriver ( A screwdriver set I use a lot https://amzn.to/3ukOGDe ) 2. Tweezers 3. 1.4mm flat screwdriver 4. Case or tray for screws 5. Petroleum jelly or silicone grease (optional) 6. Microfibre towel and toothbrush for cleaning Thanks to my Dad for teaching everything I know about watches and more ... Suresh @ The Watch Shop +44 1933 222206 https://goo.gl/maps/r8xMH9azmZPPrHbB9