JBL Deep Bass Sound - A hefty 12mm driver delivers JBL Deep Bass sound so you don't just hear the music, you feel it. Comfortable fit with open-ear design - The ergonomic fit stays snug and secure to keep you comfortable and connected all day while the open-ear design enhances your ambient awareness of your surroundings. Up to 6 hours of playback plus 20 in the case with speed charge - Never miss a beat with 26 hours of combined playtime (and 6 hours in the earbuds). Or, when you need a quick power-up, you can Speed Charge another hour of battery life in just 15 minutes and for 2 hours for a full charge. Action ready - The convenient, rain-resistant IPX2-certified design of the JBL Vibe 300 TWS earbuds means you enjoy your music anytime - rain or shine.