Catalyst Total Protection case, black Engineered for Ultimate Waterproof Protection. This Apple Watch Case is IP68 certified and can be submerged to up to 330ft (100m) for total and complete protection, which offers 2X more waterproof protection than the Apple Watch. This resilient Catalyst Apple Watch 45mm case exceeds military standards (MIL-STD-810G) for shocks & drops up to 6.6ft (2m). The material is rugged, shock-resistant, and scratch-proof. Made with maximum precision, the case keeps your device protected and can be used with many of its functions, including, touchscreen, Bluetooth, optical heart sensor, speaker, and microphone. The rotating digital crown and side button are fully protected and easily accessible.* (*Note: ECG measurements via the Digital Crown do not work with the Total Protection Case) The watchband has a new look to provide the perfect way to customize your Total Protection case. Its design is a tribute to the diving watch band the Aqua Flow System allows for water circulation and the mushroom cap on the band loop secures the band to the wrist. The case can also be easily customizable with line of colorful Catalyst Sport Bands.Features: Waterproof IP68 to 330 feet (100m) Drop-proof MIL-STD-810G 6.6ft (2m) Snow / Dirt / Sand proof True Sound Acoustic Technology Wireless Charging Compatible Optical heart sensor can measure heart rate and blood oxygen levels through the case Direct touchscreen access + easy access to the rotating crown dial and tactical side button Patented rotating crown dial Raised bezel protects the screen Aqua Flow SystemPackage includes: Impact-resistant polycarbonate housing Silicone waterproof sealing wrap Premium silicone wrist strap