Big 10mm Drivers: The drivers produce powerful sound with punchy bass. 22 Preset EQs: Choose how you want to hear your music in the soundcore app. Ergonomic, Lightweight Fit: The small earbuds are lightweight, and comfortable for long listening sessions. They fit in a tiny case with a lanyard that can be stored and carried conveniently. All-Day Playtime: Get 10 hours of playtime on a single charge and stay powered for 30 hours in total with the case. AI-Clear Calls: 2 mics and AI processing ensures that your voice is heard in crystal clear clarity. Fast Charging: A fast 10-minute charge gives your earbuds an extra 2 hours of playtime. IPX5 Water-Resistant: soundcore R50i true wireless earbuds are protected from splashes of water, so you can wear them outside, even when it rains. *Note: Water resistance rating applies to earbuds, not the charging case Instant Pairing: During first use, open the charging case, take soundcore R50i true wireless earbuds out and they will enter pairing mode. From then on, the earbuds will connect to the last paired device every time you use them. With Black Protective Case.