IPX5 Water and Sweat Resistant: The R50i earbuds are IPX5 water and sweat resistant, so you can use them even in wet or sweaty conditions. This makes them ideal for workouts or outdoor activities. Clear AI-Enhanced Calls: Hear clearly thanks to the soundcore R50i’s two built-in microphones with AI-enhanced voice capture. 30 Hours of Playtime: Get 10 hours of playtime on a single charge and keep your power for a total of 30 hours with the case. 22 Preset Equalizers: Choose how you want to hear your music in the soundcore app. Large 10mm Drivers: The drivers produce powerful sound with punchy bass. Quick Charge: A quick 10-minute charge gives your earbuds an extra 2 hours of playtime. Single Earbud Mode: Leave one ear free to hear your surroundings while listening to audio with the other. One earbud can play audio while the other is in the case