C18-RB earphones deliver the same active noise cancellation performance & sound quality as our award winning headphones but in a light weight & compact form factor streamlined for comfort. Electronically tuned dynamic drivers provide the ultimate in sound quality with deep bass, clear vocals & natural highs. Complimented with world leading ANR technology from Phitek Systems C18-RB earphones deliver unmatched sound quality in the noisiest of environments. Sporting a luxury carry pouch, lanyard, airline adapters & three sizes of ear buds, the C18-RB is fully packed with features. Enjoy an enthralling personal sound stage on-the-go with this ideal companion to your favourite portable music device. Features World leading Active Noise Rejection technology from Phitek Systems cancels 92% of background noise Electronically tuned dynamic drivers provide the ultimate in sound reproduction with deep bass, clear vocals & natural highs Ergonomically moulded ear pieces enhance listening comfort Integrated volume control positioned in-line & within reach 50 hours use from single AAA luxury carry pouch & lanyard included Engineered by experts in advanced electro-acoustics providing best-in-class audio on-the-go Included Accessories Volume Control Power Batteries Included Connector Type 3.5mm Cable Length (m) 1.2 Cable Type Symmetrical Frequency Response (Hz) 20-20000 Sound Pressure Level (d B) 94 Total Harmonic Distortion (%) 1 Form In Ear Driver Type Dynamic Driver Diameter (mm) 9