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Catalyst Waterproof Case for Apple Watch Series 4/5/6/SE - 40mm




  • Ultimate case for Apple Watch Series 4/5 40mm
  • 360° Total protection
  • IP-68 Waterproof to 100 metres
  • MIL-STD 810G for drops and shocks up to 2 metres
  • Fully sealed against water, dust, dirt and snow 
  • Raised bezel to protect screen
  • Charge watch and measures heart rate through case
  • Catalyst's True Sound Acoustics Technology™ for clear sound transmission
  • Ultra slim profile with tactile side button and patented rotating crown dial
  • All features of the Apple Watch remain fully functional 
  • Easy to install or remove device
  • Comes with hypoallergenic silicone band, waterproof sealing wrap, a test dummy with spare screw inside and screwdriver for assembl


  • Apple Watch Series 4 (44mm)


The Catalyst Case for Apple Watch Series 4 is precision-engineered to perform beyond expectations so the Apple watch can be taken on every adventure. With 18% stronger housing than the previous Series 3 version, the case offers superior protection for your Apple Watch.

This is the only Apple Watch case offering total 360-degree protection. Full functionality of the Apple Watch is maintained (with exception of Apple’s ECG/EKG) with IP-68 waterproof protection of 100 m and MIL-STD 810G drop protection up to 2 m.

It’s fully sealed against water, dust, dirt, and snow and has an exposed face for with direct touch screen access, great for all adventures – wet and dry. The raised bezel protects the screen from scratches and impacts while Catalyst's patented True Sound Acoustic Technology™ allows audio to come through totally clear.

Not only is the case rugged, it's also stylish and incorporates a hypoallergenic silicone band that’s both durable and comfortable.

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