Main Features: High-quality sound: multiple vent holes for high-fidelity music and call experience. Rear air vents: better mid-range performance / air intake vent: enhanced bass output Great acoustics: comfier and more adaptable than other in-ear earphones thanks to their unique ergonomic design HiFi experience: the AM115 creates an all-encompassing HiFi experience with lush, crisp and enjoyable sound across the entire frequency range Dynamic melody: a dual speaker box built-in earbuds to immerse the senses. These speakers have permanent magnets and a well-designed vibration system for powerful responsive sound reproduction Comfortable ear feeling: the AM115 combines the merits of both in-ear and traditional earphones. Ear canal shape analysis helps to deliver an optimal shape for the earbuds, making for a snug, comfortable fit Three-button control: responsive, easy-to-use three-button in-line control, you can answer or reject a call easily Fashion appearance: PC material, simple, elegant and wear-resistant Nice packaging: sleek, portable storage box. Say goodbye to tangled cables and protect your earphones