Huawei AM61 Sport Bluetooth Headphones Lite Wireless design, 11 hours playback, 10 days standby, Fit & secure. 137 mAh lithium battery, 10 days standby per full charge; 11 hours (≈ 220 songs) continuous playback. Brings balanced wear experience with symmetrical design of inline controller and battery Magnetic design for easy portability, stylish design for additional decoration. Wireless design, tangle free, fit & secure, no holding back. Adopts micron-level composite vibrating diaphragm to enhance transient response and reduce sound distortion, bringing higher fidelity and definition 5 g / ear lightweight, Shark-fin ear-wings, Integrated ear-tips with ear-wings. Adopts 11 mm large-size dynamic driver to power superior audio with penetrating bass. Half-in-ear design with passive noise cancellation and firmly fastened cable to ensure sports safety and reduce stethoscope effect.