Lenovo HE05X is equipped with a 10mm driver that delivers stunning sound for an enjoyable listening experience. It has a 3.7V / 110mAh large capacity battery that can last up to 12 hours. Using low-power micro-power technology combined with a chip low-power technology, greatly improving the use time. The carbon fiber composite diaphragm + large moving coil acoustic technology resonates under the action of magnetism and electricity and restores the shocking sound quality of high-frequency, intermediate-frequency, and low-frequency music with high fidelity. It is equipped with Bluetooth 5.0 chips to ensure a stable and fast connection. The Lenovo HE05X features IPX5 waterproof protection that can keep the rain and sweat far away. Its ergonomically designed earphones for long-time comfort. The Lenovo HE05X earphone has 1 Month Warranty (Must Claim With Box & All Accessories).