Earbuds with Active Noise Cancelling (ANC) to block external noise while listening to music, podcast or video. Thanks to Environmental Noise Cancelling (ENC) phone calls are also crystal clear by filtering away environmental noise during a phone call. With the powerful battery the earbuds have up to 7 hours of autonomy on a single charge. Charging time earbuds: 1.5 hours. The fully charged base can recharge the earbuds up to 3 times.