Auto Adjusting Noise,, Cancelling Advanced noise canceling system blocks noise up to 42dB With adaptive technology,, the Sound.core R50i NC detects external sound and automatically selects a suitable noise cancellation level. Powered by powerful Bass ,,10mm drivers, The Soundcore R50i NC power your music with intense bass.. The built-in BassUp technology further intensifies the bass for an impressive listening experience.. Ultra Long Listening Time Offering 10 hours of listening time on a single charge,, The Sound.core R50i NC enables up to 45 hours with a charging case. When your time is limited, you can get 2 hours of playback time with 10 minutes of fast charging. Normal Mode= 10 Hours Single Charger with 45 Hour Charging Case: 2 in 1 Charging Case and Phone Stand with 7 Hours Single Charging30 Hour Charging Case. Watch your favorite programs anywhere, anytime. Equipped with a simple on/off back panel,, The charging case can also be used as a phone stand effortlessly. =Phones larger than 6.5 inches can cause stability problems when placed in the vertical position. 4 AI Supported Clear Calls with Microphones 4 microphones and an AI algorithm that captures your voice precisely.= Enjoy clear calls wherever you go. Choose Your Own Mute Manually adjust the noise canceling at 5 levels and 3 different modes according to your preferences. =Hear The World Take the world in or focus on your voice, the choice is yours. =Switch to transparency mode to hear the world around you when needed. Using the 3D Sound Soundcore app, activate the environmental sound effect and experience more immersive sound. Personalize Audio Choose from 22 custom EQ options to adjust your listening experience to your hearing profile.= Create and save multiple audio profiles that fit the content you're listening. Ergonomic Fit The Sound.core R50i NC= Has an ergonomic design that guarantees comfort even during prolonged use. One-Step Pairing,,.