P9 Air Max Bluetooth Headphones: Strive for perfection, high beauty and strength, super waterproof performance, hifi sound quality, comfortable to wear. Bluetooth 5.1 chip: one faster step for high-speed transmission. Equipped with the new Bluetooth 5.1 chip, senseless delay, visualization, and gaming are more convenient. More penetrating and stable signal. Excellent listening experience. Elaborate details: from the mesh on the headband to the memory on both sides. Sponge ear cushions make wearing more comfortable. Ultra-long endurance: increased battery capacity to keep you listening to music. 120 days of standby music, enjoy music in a moment with fast charging technology. Full ear protectors isolate surrounding noise. Effectively isolate external noise, providing an extraordinary listening experience. Special drive unit components, through mutual cooperation, can achieve ultra-low distortion across the entire audible range. Breathable all-around earmuffs, breathable and comfortable memory foam. Fits the ear to isolate noise. Lightweight, more comfortable to wear.