Detachable in-ear headphones that adopt a stylish, over-the-ear hybrid design, in which the 10mm titanium diaphragm driver produces abyssal lows while the Knowles 33518 balanced armature driver provides exquisite mids and highs. These two drivers work perfectly in harmony to allow user to truly dive into a musical, yet highly detailed experience. To achieve the highest sound quality possible, the Knowles balanced armature unit is put inside the sound tube to minimize its distance to the ear. The sound tube is made of brass which has higher density than aluminium, providing a more stable base with less undesirable resonances. The headphones use a meticulously designed crossover system so that the hybrid design can reproduce any frequency within the 20Hz to 40kHz range with the utmost fidelity (certified by the Japan Audio Society to be "Hi-Res Audio" capable). The over-the-ear design of the headphones that is not only ergonomic but also comfortable. The shell of the headphones is specifically nano-coated to make it scratch-resistant, coupled with the UV-treated skin-friendly material. They utilize the standard MMCX connector for its interchangeable cable, and come supplied with both 2.5mm balanced and 3.5mm single-ended cables. Included in the package are also two different kinds of ear tips - one set optimized for bass while the other is designed for a more balanced presentation. Each type of ear tips comes in small, medium, and large sizes. A waterproof carrying case is also included. Frequency response: 20 Hz - 40 kHz. Impedance: 26 Ohm. Sensitivity: 106 dB/mW. Maximum Input: 100mW. Single ear-bud weight: 3.65 g. Gunmetal Grey colour design.