The TWS159 earbuds have 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. The earbuds have 3.5 hours of autonomy, with a charging time of 1 hour. The charging case can charge the earbuds up to 4 times on a single charge, and it also has a small screen indicating the battery life of the earbuds. Additionally, the TWS159 earbuds can be personalized with custom engraving or color options.