PROMETHEUS BLON Prometheus features a unique housing design that resembles both a bicycle helmet and an alien plant. The open structure serves exclusively as a decorative element. Enclosed inside this unique design is a 10mm lightweight diaphragm. This enclosed driver design means that sound will not leak. 10mm LIGHTWEIGHT DIAPHRAGM BLON BL-A8 Prometheus is equipped with a 10mm Dynamic Driver unit that delivers exceptionally good output. This new lightweight diaphragm provides deep bass, flexible highs and restoring original sound. Along with excellent tuning technique, you are able to experience a stereo sound like you are on the scene IRREGULAR OPENWORK SHELL One of the factors that makes BLON Prometheus standout in the market is its unique looks. The product has a shiny metallic shell full of open holes that gives an impression of a completely open cavity. Composed of 14 irregular non-overlapping sides, this 3D-printed shell is a work of modern art and aestheticism. ERGONOMIC COMFORTABLE WEARING Having an innovative shell design does not mean comfort is compromised. The housing design takes into consideration the ergonomic of the human ear.v DETACHABLE 2 PIN CABLE Included cable is detachable making it available for future upgradeability. Moreover, we have designed a cable with microphone for this model so you are free to choose any type according to your needs