You can use the JBL Wave earbuds when you still want to hear your surroundings. That way, you can enjoy your music while you're still aware of what's going on around you. With the JBL Wave Flex, you also enjoy a long 30-hour battery life. Want earbuds with passive noise canceling? Consider the Wave Beam and the Wave Buds with an in-ear design. That way, the ambient noise is reduced.