Features: Engineered with 10MM double chamber structure and berylliums diaphragm technology, this HiFi dynamic driver delivers studio sound reproduction with minimized distortion, high frequency extension, and punchy bass response for audiophiles. The precisions crafted metal housing features optimized acoustics pathways that separate front/rear chambers, achieving clear sound layering and 20% wider dynamic ranges than conventional single chamber driver. for music producers, sound engineers, and sound enthusiasts seeking professional monitoring equipments or personals listening upgrades across headphones and speakers systems. Perfectly adapts to critical listening scenarios from studio mixing that demand accurate midrange reproduction to mobile use where robust bass performances enhances tracks during workouts. Backed by militaries durability testing, the corrosions resistant berylliums diaphragm maintains consistent frequency response over 10,000hours, while its universals 3.5mm compatibility ensures seamless integration with existing sound setups. Specifications: Materials: Metal Size: 10x5.5mm Diaphragm materials: berylliums film Frequency ranges: 20Hz~20KHz rate impedance: 32Ω±10% rate power: 2~3mW Resonance frequency: 400Hz±20% Sensitivity: 105±1.50dB Package Includes: 2Pcs 10mm Headphone Unit speakers note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.