Enter the Zero! The Brainwavz S0 earphones have been designed to provide a balanced sound signature with each part of the sound spectrum represented accurate and clear. The all metal housing provides a sleek look and feel, coupled with long lasting durability. These in-ear earphones are designed to sound good with any genre of music. Features: - Balanced audio signature with overall smooth sound. - All metal housing in an in-ear design with special finish to give a smooth, slick feel. - Flat cable for less tangle and easy to wear. The cables are made with high purity OFC copper wiring at its core. - Comply S-400 foam tips included. The best premium foam ear tips that can be found, provides for perfect seals and enhanced bass response. - Other included accessories: 6 pairs of silicone tips, 1 pair of Bi and 1 pair Tri-flange tips, shirt clip and hard carrying case to protect your earphones. Specifications: Transducers/Drivers: Dynamic, 9mm Rated Impedance: 16ohms Closed Dynamic Sensitivity: 100dB at 1mW Frequency range: 18Hz ~ 18kHz Distortion: Included Accessories: 1 x Comply foam S-400 tips 6 x Silicone tips 1 x Bi-Flange tips 1 x Tri-Flange tips 1 x Shirt Clip 1 x Earphone carrying case 1 x Instruction manual