xD-Picture Card capacity varies by card and camera firmware
Battery
Olympus model-specific rechargeable battery
Size
94 x 61 x 21 mm
Researched owner note
Why people still want it
Olympus Stylus 850 SW is best treated as an Olympus Tough / SW rugged compact where the whole value is weatherproof-style carry, macro play, beach trips, and a body that still proves clean doors and seals. Judge this exact model around its 2008 release context, 8 MP, 1/2.35-inch (5.76 x 4.32 mm) CCD, 38-114 mm equivalent, F3.5-5, and xD Picture Card, Internal setup instead of the brand name alone. Alternate or regional names to search include mju 850 SW, µ 850 SW.
What owners like
People still look for Olympus Stylus 850 SW because it gives a real-camera flash workflow, brand-specific color and menus, and a tactile body that feels different from a phone. The useful part is the exact mix of 38-114 mm equivalent, F3.5-5, xD Picture Card, Internal, and the model's size when the seller proves the actual unit works.
Common complaints
Common complaints are worn seals, corrosion inside battery/card doors, stiff buttons, scratched lens covers, weak waterproof confidence, and sellers assuming the Tough label still means safe underwater use. For Olympus Stylus 850 SW, the practical risk is the 2008-era condition: Olympus model-specific rechargeable battery means the charger, spare battery cost, and whether the pack still holds charge matter; xD Picture Card, Internal can be the hidden cost because cards and readers are less convenient than standard SD; and buttons, doors, seals, and lens cover movement need closer inspection than the waterproof label.
What to compare
Use Olympus Stylus 1030 SW, Olympus Stylus 1050 SW (mju 1050 SW), Fujifilm XP10, and Fujifilm FinePix XP20 as the real comparison set for Olympus Stylus 850 SW. Compare seal condition, corrosion risk, door/gasket proof, and whether a non-rugged compact is a cleaner buy; the best buy is usually the listing with clearer working proof and easier accessories, not the one with the most familiar name.
Built from this model's specs plus source-backed Reddit / review / model list owner patterns.