3D PRINTING TECHNOLOGY - The internal acoustic structure is made by modern high-precision 3D printing technology FIVE BALANCED ARAMATURES - The sophisticated crossover circuit design fully utilizes the performance advantages of each balanced armature. HIGHT RESOLUTION & RICH DETAILS - The 22955 low-frequency balanced armature which is customized for AS10, it is not only low-frequency strength but also full of explosive power AUDIPHILE & REMOVABLE CABLE - Professional wire providing excellent sound quality signal transmission, anti-pull, anti-torsional, anti-corrosion. Product Details Connectivity : Wired Driver: Balanced armature by 5pcs Sensitivity: 105dB DC resistance: 14 ohms Frequency range: 20Hz-40000Hz Microphone: Optional Cable length: 3.9 foot Color: Black/Blue Dimension and Weight Product weight: 0.04 pounds Package weight: 0.14 pounds Package size (L x W x H): 4.1 x 2.76 x 1.26 inches Whats in the box. 1 x KZ AS10 Earphones 2 x Earbud tips(2 pairs, S/L) 1 x User manual