JBL Reflect Eternal does not need to be charged ever

More than solar-powered

Most good wireless headphones have good battery life (20-30 hours). They can last a day or two or even a week without charging depending on usage. But you tend to forget to charge them after use and eventually you end up with bluetooth headphones without power.

JBL‘s Reflect Eternal headphones does not need to be charged manually. It seems it never needs to charged unless all light in this world is extinguished.

The more time you spend outside with the Reflect Eternal, the more playtime you get. 1.5 hours of exposure to the sun per day can give you up to 68 hours of playtime. If you spend 2 hours outside per day with the headphones you can get 168 hours of playtime. You get basically unlimited playtime if you spend 2.5 hours per day outside with the sun shining.

However, it's not just the sun giving the JBL power. It also uses artificial light from indoor lighting to charge itself. It's not as good as charging it outdoors where the light is more intense but it helps.

In case you live in the dark, the JBL Reflect Eternal has a 24 hour battery life and takes 2 hours for a full charge from empty. You can also a 15 minute quick charge for 2 hours of playtime.

Exeger Powerfoil

The JBL Reflect Eternal's incredible ability to charge itself with both indoor and outdoor light with such efficiency is all thanks to the Powerfoil technology by the Swedish company Exeger.

According to Exeger, Powerfoil is a photovoltaic technology that converts photons into energy through their special nano material, just like chlorophyll in plants.

Powerfoil looks nothing like typical solar panels. They can be integrated into logos, artwork, photos, patterns, and textures. They can bend and turn without breaking and printed in any shape.

Hence you don't see any sign of solar cells on the JBL Reflect Eternal. It's the first headphones to use Powerfoil technology.

Exeger Powerfoil Tech

Other features and specs

The best feature of the JBL Reflect Eternal is definitely the light-charging unlimited battery life. However, battery is unlimited only if you spend some time in the sun, which may encourage you to spend more time outside so you get the added benefit of vitamin D from the sun. Here are its other useful features:

  • Manage calls with buttons on the earcup
  • Activate Google Voice Assistant or Amazon Alexa with a tap
  • Stay in touch with your surroundings while listening to music with Ambient Aware and TalkThru technology
  • Easily switch between bluetooth devices
  • JBL signature sound

Here are the Reflect Eternal specs:

  • 24 Hours Battery Life (3.7V / 700mAh)
  • Music Play Time with BT On:Unlimited (with SOLAR charging)
  • Battery Type: Polymer Li-ion Battery (3.7V DC, 700mAh)
  • Charging Time: 2hrs from empty (via USB)
  • Quick Charge: 15 mins for 2 hrs playtime
  • IPX4 Rating
  • Bluetooth® Version: V5.0
  • Bluetooth® Profiles: A2DP V1.3, AVRCP V1.5, HFP V1.6
  • Driver Size: 40mm
  • Driver Sensitivity at 1kHz/1mW: 106dB SPL
  • Dynamic Frequency Response Range: 20Hz-20kHz
  • Max Input Power: 15mW
  • Impedance: 32 ohm


  • Unlimited play time
  • Encourages you to go outdoors
  • Affordable
  • Latest Bluetooth 5.0 technology
  • TalkThru technology lets you be aware of your surroundings


  • Still in prototype stage at time of writing


JBL is seeking funding for the Reflect Eternal on Indiegogo and is now in the prototype stage. It has already been fully funded and it's a great opportunity to get the headphones at a heavily discounted price. It's a great deal for a headphones with unlimited playtime at that price. People would probably still buy it if it were more expensive.

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