Apple Watch Series 12 46mm Flip Cases (Bookcases)

Depending on the model one to three cards, some add a window or a cash pocket. Too many cards strain the cover and loosen the closure over time.

Usually only with the cover open or the device removed; cards in the slot block charging too. For regular Qi or MagSafe charging a back cover is more practical.

Good cases have a soft inner lining against the screen. Combined with a screen protector you are on the safe side.

Quality bookcases use several magnets or a flap. Very full card slots work against the closure, so the cover eventually pops open on its own.