Edifier H840 Audiophile Over-The-Ear Headphones - Hi-Fi Over-Ear Noise-Isolating Closed Monitor Music Listening Stereo Headphone - Blue PROFESSIONAL SOUND - 40mm driver units fine tuned for quality sound output in enclosed ear cups COMFORT MATTERS - Ergonomic fit with over-ear design of lightweight body, comfortable soft leather earmuffs for prolonged wearing SOLID BUILD - Leather headrests with steel reinforced headband for flexibility and durability QUALITY CONNECTION - 3.5mm gold-plated audio plug with 6ft high strength cable ONE YEAR WARRANTY - Extremely durable and flexible, 12 month warranty in USA and Canada