📌Lab Points closed-back ideal for both home and on-the-go listening navy blue finish and copper details semi-aniline leather earpads combined with the design of the earcups are big contributors to both the comfort and soundproofing of the headphones low impedance (35 Ohms) to ensure uncompromising use with a portable audio player 40mm aluminum/magnesium electrodynamic full-range speaker drivers deliver exceptional dynamics and a linear frequency response that extends to 23 kHz leading to incredibly precise sound reproduction ‘M’-shaped inverted dome speaker drivers and their larger emissive surface area vastly increases listening clarity. "Celestee is a set of high-end headphones combining elegant design and remarkable sound performance. They incorporate the latest Focal technologies: 15/8" (40mm) Aluminium/Magnesium ‘M’-shaped dome full-range speaker drivers and acoustic treatment within the earcups to prevent resonance. Celestee headphones boast outstanding tonal balance: incredible bass extension with precise treble and high-mids to delight any music lover." - Focal