Significant noise reduction for travel, busy office and anywhere in between. 40mm big speaker drivers for deep, powerful sound for the music you love. Comfortable, Lightweight, around-ear fit you can wear all day long. Advanced Bluetooth 4. 1 can connect almost all Bluetooth devices. 50 Hours Playtime. Item Dimensions: 7. 68 x 6. 61 x 3. 62 in Item Weight: 0. 67 lb Headphone Fit: Over-Ear