Dynamically block unwanted external noise with Active Noise Cancelling (ANC). When you need to hear the world around you, switch to Transparency mode, which uses external-facing microphones to mix the sounds around you for a natural listening experience. Beats Studio Buds are engineered to deliver powerful, balanced sound in a compact design, through an entirely customised acoustic platform. The result: immersive sound that pulls the emotion of music from the studio to your ears to keep you going all day long. These earbuds have up to 8 hours of listening time1, with two additional charges provided by a pocket-sized charging case2, giving you up to 24 hours of combined playback. If you need a little extra power, 5 minutes of Fast Fuel charging gives up to 1 hour of playback3 when the battery is low.