Casio Watch Line: G-Shock
Battery type: SR927W × 2
Battery price: 6$ [average Amazon price. We may earn a commission on qualifying purchases from our links to Amazon]
Original Battery for: G-Shock GA-400 Watch
Compatiable with models: GAC-100, GST-200, GA-1100, GAX-100, GN-1000, GG-1000, GST-210, GA-300, GBA-400, GST-400
Will be useful: Watch Repair Kits
The CR2016 100% does not fit a Casio GA-400. Update your site. The CR2016 is 4 times larger than the actual battery that fits in this watch. The correct battery for a GA-400 is the SR927SW. It takes two of these. Your site led me astray and now I have to return the CR2016’s and order new batteries.