ALUMINUM ALLOY AND RESIN HOUSING DESIGN - The cover is made of high quality Aluminum Alloy while the cavity is made of imported resin. The combination of different materials and the wide range of color options display a modern and eye-catching, fashionable earphones. DRIVERS IMPROVED - Upgraded 4BA 1DD Hybrid drivers Earphones & Magnetic Dynamic Unit. As an upgraded version of KZ ZS10, which provide excellent sound. It’s full of low frequency, rich in details. The sounds signature is balanced, coherent top to bottom with good deep solid bass, clear mid range and beautiful high frequencies. The PCB board is added to give full play of all the drivers, displaying a smooth, sensible, detailed music experience. IMPROVED DETACHABLE CABLE - The KZ ZS10 Pro upgraded cable with slot protection design. It can effectively protect the pins to avoid breakage and extend the service life. Easy replacement also enables more potential of the earphones. You can replace it with other IEM cables. NOISE CANCELING & ERGONOMIC WEARING - In the absence of playing music, properly worn earbuds can isolate 26db noise sound. Let you listen to the music details in a noisy environment. Independent sound channel for each driver, the sound will not be distorted, brings you a new kind of auditory sense. Ergonomic design and earhook provide you comfortable wearing experience.