LUNATIK EPIK Aluminum Case and Silicone Strap for Apple Watch Series 1, Silver/Black Aircraft-grade anodized aluminum case with shock-absorbing pads Full access to all sensors, magsafe charging, heart rate sensor, speaker and microphone Highly tactile and textured oversized active-control crown for easy access and use in physical activities Soft silicone band with Anti-dust and dirt nano coating Designed for Apple watch 42mm.