The Custom-1 Headphones are high-performance yet affordable. They have exceptional durablity and give a secure fit for any active lifestyle. Features Precise audio performance Secure personalized fit for active lifestyles Unparalleled comfort Exceptional durability Works with iPods, iPhones and other portable devices Custom-1 headphones with supplied accessories. Specifications sensitivity 108 dB nominal impedance 30 ohms drive components Full Range KG 332 input connections 3.5mm dimensions Packaging: 7.25” H x 5” W x 3.5” D weight 0.458 oz., 13 grams accessories Vinyl carrying case; five sets of ear gels; ear tip cleaning tool features 50" cable; Soft dark gray oval silicon ear tips finishes Black soft-feel paint with off-white lettering Documentation UPC: 743878019513 Keywords: Custom1, Custom 1