TWO CASIO DIGITALS / EXACT VARIANTS
F-91W vs AE-1200:
which fits your day?
Start with weight and size. Then decide whether you need world time and a countdown timer.
Here we compare the F-91W-1 with black resin strap and the AE-1200WHD-1AV with silver steel bracelet. Casio’s US name for the latter is AE1200WHD-1A. These notes use published specifications, not hands-on testing.
As an Amazon Associate I earn from qualifying purchases. Amazon links are affiliate links.
SMALLER & LIGHTER
F-91W-1
Black resin case and strap. Choose it if basic timekeeping, one alarm and a stopwatch cover your routine.
Check on Amazon Read the F-91W guide →WORLD TIME & TIMERS
AE-1200WHD-1AV
Silver resin case, black face and steel bracelet. Choose it if checking another time zone or setting countdowns is part of your day.
Check on Amazon Read the AE-1200 guide →Compare the space on your wrist
F-91W-1
AE-1200WHD-1AV
The AE-1200 is 6.9 mm wider and 4 mm thicker; with its bracelet it weighs 70 g more. Those differences are useful starting points for fit, not a guarantee of comfort. Compare the width, length and thickness with a watch you already wear; a bracelet may also need sizing.
The specifications behind the choice
| Feature | F-91W-1 Black resin strap | AE-1200WHD-1AV Steel bracelet |
|---|---|---|
| Case length × width × thickness | 38.2 × 35.2 × 8.5 mm | 45 × 42.1 × 12.5 mm |
| Weight | 21 g | 91 g |
| Case / glass | Resin / resin | Resin / resin |
| Band | Resin strap | Stainless-steel bracelet |
| Alarms | One daily alarm | Five daily or one-time alarms |
| World time | No | 31 time zones, 48 cities + UTC |
| Countdown timer | No | Up to 24 hours |
| Water rating | Basic water resistance | 100 m |
Which tradeoff would you notice?
- For a modest case: start with the F-91W’s smaller dimensions. Try a similarly sized watch before ordering if bulk or sleeve clearance is your main concern.
- For a recurring second time zone: the AE-1200 gives that task a dedicated function. If you only need local time, consider whether you want its extra modes.
- For timed routines: choose the AE-1200 for countdowns and multiple alarms. The F-91W covers an elapsed-time stopwatch and one daily alarm.
- For the silver look: the AE-1200’s bracelet is steel; its case is resin. Do not mistake its finish for an all-metal case or substitute the lighter black resin-band AE-1200 variant.
For water activities, follow Casio’s usage guidance rather than treating a depth rating as a universal permission. The F-91W’s basic rating and the AE-1200’s 100 m rating are different; neither comparison is a test of real-world durability.
Match the listing before buying
Both buttons open identity-matched Amazon product listings. Confirm the selected reference, band, color, seller, condition and return terms. Prices and availability are not live-verified here; an Amazon listing may switch between variants.
Sources reviewed October 13, 2026. [1] Casio F-91W-1 specifications; [2] Casio AE-1200WHD-1AV specifications. Size comparisons and decision criteria are our analysis of those specifications, not measurements from watches we tested.