Beats headphones in good condition only flaw is fraying but can’t tell when on and sound quality is not affected Features: Pure Adaptive Noise Canceling (Pure ANC) actively blocks external noise Real-time audio calibration preserves a premium listening experience Up to 22 hours of battery life enables full-featured all-day wireless playback These headphones feature Apple W1 chip for Class 1 wireless Bluetooth® connectivity and battery efficiency With fast fuel, a 10-minute charge gives three hours of play when the battery is low Pure ANC off for low-power mode provides up to 40 hours of battery life Take calls, control music, and activate Siri with multifunction on-ear controls Soft over-ear cushions ensure extended comfort and added noise isolation