SpecificationsSound: 40 mm drivers reproduce a balanced sound with natural and powerful dynamic soundEquipment: Bluetooth, multipairing with up to 8 devices (iOS, Android and Windows), supports NFC, hands-free function for telephoning, can be used with smartphone, tablet, MP3 player, hi-fi systemBattery: Powerful battery provides up to 15 hours of music playback (up to 200 hours standby time) with a single charge, charging time: 3 hoursWearing comfort: Cordless, earpieces and earpads made of polyurethane, ergonomically shaped, 160g weightScope of delivery: Pioneer headphones SE-MJ561, Micro USB cable, user manual