Brainwavz R3 Dual Dynamic Driver Earphones (V2) Twin drivers with passive crossover configuration. Uniquely positioned to be facing into each other, the resulting fusion and mixing of sound waves makes for a lush, detail rich sound that has a wide and open feeling that is normally only found on full size headphones and not on earphones. Clear detailed audio with a clean bass and a wide soundstage. The sound characteristics of our R3 are hard to find on almost any other in ear earhone. All metal housing in a over the ear design. Made from high grade, light weight aluminum. The housing may seem larger, but is light weight and their vertical design actually makes them very comfortable to wear. Comply foam tips included. The best premium foam ear tips that can be found. Other accessories included: 6 pairs of silicone tips, 1 pair bi and 1 pair tri-flange tips, 1 airplane adapter, 1 6.3mm adapter and 1 hard carrying case to safely store your earphones.