What is the infinite battery? Do these Headphones/Earphones really never go dead? As a duo they never do! Just like Batman and Robin when one is fighting the other is charging. This means you always have your Plugfones available and ready to go. Interchangeable pairing means that you just swap the red pair out when the black needs to charge. Amazingly you still get at least 6 hours per set so don't wake up Robin because Batman is still in the fight. At Plugfones we know the battery is king for your work day so we made the duo to keep you rolling no matter how long your shift is or how far you are running. Don't forget Plugfones are the only patented Bluetooth hearing protection. This is not electronic noise cancelation, this is literally an ANSI-rated earplug to block harmful noise. Did we mention how comfortable these are? We have to use earplug-grade foam or silicone to give you hearing protection, but this translates into the most comfortable earbud experience there is. No hard plastic stuck in your ear that starts to hurt after a while. Plugfones also stay put because the earplug creates a seal in your ear. No more earbuds falling out! Premium audio without the price tag! Plugfones are half the cost of other premium brands and with the Sovereign Duo, they are even less than that per set. But just because they are less money doesn't mean we don't dial in our tuned speakers to give you a premium sound experience. Just hook these up to any Bluetooth-enabled device and you are off to the races. The best Headphones/Earphones around.

About this item

• USE ONE CHARGE ONE: Plugfone's revolutionary infinite battery allows you to actively listen to one set, while the other set is charging. Infinite power. Always connected, always protected. Interchangeable pairing allows for the seamless change from one pair to the other.
• ONLY U.S. PATENTED EARPLUG WITH AUDIO: We’ve combined comfortable, OSHA-compliant NRR 22 safety-rated earplugs and our own custom-tuned speakers to give you the ultimate hearing protection and rich, immersive sound.
• SECURE STAY IN PLACE won’t fall out all day comfort plugs. Sovereign Duo includes five sizes and styles of plugs for your perfect comfort fit. PLUGFONES are designed to be worn for hours at a time, ear fatigue-free. Soft foam & silicone earplugs are interchangeable replaceable plugs.
• EVERYDAY EARBUDS: Starting the day with a workout and then straight off to work- PLUGFONES Sovereign Duo is your go-to. For the commute, meetings, study, hobbies, DIY projects, and indoor or outdoor work. PLUGFONES blocks hazardous noise while playing your audio. ANSI-certified Noise Reduction Ratings (NRR) of 22 dB, OSHA compliant.
• INCLUDES 4 Sovereign Duo Wireless (2 pairs), Earplug Earbuds, Charging Case, Single Tier Silicone- 4 small, 4 medium, 4 large, 4 ComforTiered Silicone, Single Tier Foam- 2 Large, 2 small, Zippered Storage Case, Pocket case.
• WARRANTY: Money back guaranteed purchase with confidence