Closed back, around ear design. Connectivity technology: WiredPowered by proprietary Sennheiser 38mm, 23-ohm transducersSoft, replaceable ear pads for enhanced comfortTwo cables included - 3m detachable cable with 6. 3mm jack and 1. 2m detachable cable with 3. 5mm jack with in line microphone and remote for call & music controlTwo year when purchased from an authorized Sennheiser dealer
