SEIDIO TETRA ™ S (2 Pack) for APPLE iWatch - 38mm - color bumper Border Watch the perfect look for your protection in the new Apple? Just look at our new TETRA S protection case. A flexible， non-allergenic TPU material provides a soft touch and durable protection benefits increase more secure experience. All functions， such as heart rate sensors and digital crown， is at the same time protect the most vulnerable areas， bezel， and button reserved. Precision cut your heart rate sensor and charging port means you never have to go without protection， The two color options allow you to never compromise on style. The TETRA S is a smart decision for your smart watches. - Minimalist fashion unique style Material selection for allergic skin lowest plastic material. Solve Apple Watch metal selection fear human allergies caused doubts. Protective frame of soft plastic material， the more wear and enhance product crashworthiness. Total color combinations are two: "transparent + black" and "transparent + Blue" - Easy to install， you can quickly and easily swapped out colors custom fit your mood