A person lifts a dumbbell wearing the Catalyst Case US 41mm Rugged Case + Band for Apple Watch Series 9/8/7, featuring a black band, fitness display, and highlighted 10ft Military Drop Proof durability.

Apple Watch Cases

Rugged and waterproof case-and-band sets for Apple Watch, sized 38mm through 45mm across Series 2 to Series 9 and SE. The case and band come as one piece.

Rugged and waterproof case-and-band sets for Apple Watch, 38mm through 45mm, across Series 2 to Series 9 and SE. The case and band come as one piece.

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13 products

The Catalyst Case US 44mm Rugged Case + Band for Apple Watch Series 6/5/4/SE (Gen 2/1) is shown in black, displaying the time (10:09), Fri 23, heart rate, and a weather forecast with a 60% chance of rain.The Catalyst Case US 44mm Rugged Case + Band for Apple Watch Series 6/5/4/SE (Gen 2/1) features a blue, textured band and angled display showing time (10:09), date (Fri 23), heart rate, weather with rain chance, plus a red-accented side button.
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catalyst apple watch series 3 42mm waterproof case sport band showing the digital crown and touchscreen access text reads digital crown dial touchscreen accesscatalyst apple watch series 3 42mm waterproof case sport band showing splashes of water text reads 330ft waterproof 100 meters ingress protection ip68
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The Catalyst Case US 44mm 100M Waterproof Case + Band for Apple Watch Series 6/5/4/SE (Gen 2/1) features a rugged black design, vibrant display, silicone band, side buttons, and splash-proof performance for time, activity, and weather tracking.The Catalyst Case US 44mm - 100M Waterproof Case + Band for Apple Watch Series 6/5/4/SE (Gen 2/1) features a rugged, water-resistant design with sturdy strap—perfect for active lifestyles and all-weather use.
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The Catalyst Case US 42mm – 100M Waterproof Case + Band for Apple Watch Series 3/2 is shown in black with water splashes, displaying an analog clock, weather (68°F PARTLY CLOUDY), and icons against a clean white background.CAT38WAT3BLK | Waterproof Case for 38mm Apple Watch Series 3
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The Catalyst Case US 42mm – 100M Waterproof Case + Band for Apple Watch Series 3/2 is shown in black with water splashes, displaying an analog clock, weather (68°F PARTLY CLOUDY), and icons against a clean white background.The Catalyst Case US 42mm - 100M Waterproof Case + Band for Apple Watch Series 3/2 features a black and gray rugged design with analog-style face and weather widget, combining water resistance and style for any adventure.
Color +6
CAT38WAT2PPL-FBA | Waterproof Case for 38mm Apple Watch Series 2CAT38WAT2PPL-FBA | Waterproof Case for 38mm Apple Watch Series 2
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catalyst apple watch series 3 2 38mm impact protection case front view bluerdige sunset impact protection case with black bandcatalyst apple watch series 3 2 38mm impact protection case pressing the button of the apple watch with impact protection case
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catalyst apple watch series 3 2 42mm impact protection case front view bluerdige sunset impact protection case with black bandcatalyst apple watch series 3 2 42mm impact protection case side view of the impact protection case army green with the crown dial
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The Catalyst Case US 45mm Rugged Case + Band for Apple Watch Series 9/8/7 features a black, rectangular design. It displays an analog clock with white numbers and a red second hand for a stylish, durable look.Close-up of a person lifting a dumbbell, wearing the Catalyst Case US 45mm Rugged Case + Band for Apple Watch Series 9/8/7. Text: “10ft Military Drop Proof—2.5x stronger than military standard.”.
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The Catalyst Case US 45mm - 330ft Waterproof Case + Band for Apple Watch Series 9/8/7 is displayed at an angle with a rugged, textured band, bold numerals, and durable side buttons, surrounded by splashing water to emphasize its water resistance.A swimmer adjusts a black Catalyst Case US 45mm - 330ft Waterproof Case + Band for Apple Watch Series 9/8/7 as vibrant fish pass in clear water. Sunlight dances while text reads “2X MORE WATERPROOF,” “4 ft vs 330 ft,” “Compared with Leading Competitor.”.
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The Catalyst Case US 41mm Rugged Case + Band for Apple Watch Series 9/8/7 features a sleek black design with a large rectangular screen, bold yellow numbers, red-ringed crown, and a patterned strap, displayed on a cracked white surface.A person lifts a dumbbell wearing the Catalyst Case US 41mm Rugged Case + Band for Apple Watch Series 9/8/7, featuring a black band, fitness display, and highlighted 10ft Military Drop Proof durability.
Color +6
The Catalyst Case US 40mm Rugged Case + Band for Apple Watch Series 6/5/4/SE (Gen 2/1) in sleek black showcases the time, date, weather, and heart rate. It stands upright on a reflective surface with a scattered glass effect below.A close-up shows a person lifting a dumbbell, wearing the Catalyst Case US 40mm Rugged Case + Band for Apple Watch Series 6/5/4/SE. Overlay text reads "9.9ft Military Drop Proof," "4000+ Drop Tests," and "0% Damage" against a blurred background.
Color +6
CAT38WAT2GITD-FBA | Waterproof Case for 38mm Apple Watch Series 2The Catalyst Case US 45mm Rugged Case + Band for Apple Watch Series 9/8/7 features a black, rectangular design. It displays an analog clock with white numbers and a red second hand for a stylish, durable look.
Apple Watch Cases Sale priceFrom $39.99 USD
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How to choose an Apple Watch case

Measure the case, not the wrist. Apple Watch sizing refers to the watch body in millimetres — 38, 40, 41, 42, 44 or 45mm — and it is printed on the back of the watch. Series generations also differ in body shape, so both numbers matter.

Case and band are one piece here. Rather than a bumper you add to an existing strap, these are integrated case-and-band sets. That removes the gap at the lug where a separate case and strap meet, which is where grit collects and where a watch is most often knocked loose.

Rugged or waterproof. Rugged sets are built around impact and abrasion. Waterproof sets seal the watch body as well. If you swim, dive or work around water, choose the sealed option.

Apple Watch case questions

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Our customer support is available Monday to Friday: 8am-8:30pm.Average answer time: 24h

Not sure which model you have? Our find my model guide identifies your iPhone, Apple Watch, iPad and AirPods from the device itself — the most common reason a case does not fit is buying for the wrong generation.