AWARD-WINNING DESIGN - The Catalyst case for 44mm Apple Watch Series 4 is fully compatible with the 44mm Apple Watch Series 5, 6 & SE. This is the world’s first and only Apple Watch Case that guarantees total protection up to 330ft underwater. WATERPROOF PROTECTION - The case has a waterproof rating of IP68 that allows you to dive as deep as 330ft (100m). RESISTANCE TO DROPS - This resilient Catalyst Apple Watch 44mm case exceeds military standards for shocks & drops up to 6.6ft (2m). The material is rugged, shock-resistant and scratch-proof. In addition, Catalyst provides a 12-months Manufacturer Warranty.