by Anker Space A40 Auto-Adjustable Active Noise Cancelling Wireless Earbuds, Reduce Noise by Up to 98%, 50H Playtime, Hi-Res Sound, Comfortable Fit, App Customization, Wireless Charge (Blue)

Reduce Noise By Up to 98%: Space A40 has an upgraded noise cancelling system to block out a wider range of distracting noises. So wherever you go, you'll always have the space you need to focus.
Automatically Tailored Noise Cancelling: Space A40 detects external noises and automatically selects a suitable level of noise cancelling for your surroundings. Enjoy your personal space whether you're indoors, outdoors, commuting, or on a flight.
50 Hours of Personal Space: That's enough playtime to enjoy up to 1,000 songs or 25 movies. The earbuds have a 10-hour single charge playtime, and fast charging gives you 4 hours of listening from a quick 10-minute charge.