The battery life specs on the JBL REFLECT Eternal Solar-Powered Headphones don’t really matter. That’s because these headphones draw their power from the sun, essentially giving you endless playtime. In fact, if you spend just 2.5 hours in the sunshine per day, these solar headphones offer unlimited battery life. That’s a great way to encourage you to be outside. And if you have less free time to spend outdoors each day, that’s ok. By spending just an hour and a half in the sun, these self-sustaining headphones give you a whopping 68 hours of playtime. Compare that with most other headphones that offer half as much, and you’ll never have to stop listening to music. And just in case you need a little extra power boost during a cloudy week, you can plug them in via their USB charging port.