Space A40 has an upgraded noise cancelling system to block out a wider range of distracting noises. Space A40 detects external noises and automatically selects a suitable level of noise cancelling for your surroundings. The earbuds have a 10-hour single charge playtime, and fast charging gives you 4 hours of listening from a quick 10-minute charge. Thanks to soundcore's pioneering double-layer diaphragm drivers, Space A40 noise cancelling earbuds produce sound with strong bass, clear mids, and bright treble. You can also listen using LDAC mode for Hi-Res Audio Wireless sound.