Directly powered by smartphone battery, easy plug & play. Body made of aluminum alloy, lightweight and compact for easy portability. Uses a MEMS silicon microphone to effectively reduce wind noise and enhance call clarity. Ergonomic in-ear design; silicone ear tips and food-grade silicone ear plugs are available in various sizes to ensure a perfect fit in your ears and provide lasting comfort. Integrates the ANC button on the side of the inline control to toggle ANC on and off.