Human Charger - Sun in Your Pocket


Sun in Your Pocket

Learn more

Sunshine boosts your energy levels, lifts your mood and helps you perform at your best. When you travel between time zones, days and seasons, you just don't get enough light. The HumanCharger gives you UV-free, blue-enriched white light when you need it most.

Our story

Living beings are designed to rise and fall with the sun. But we extend our days, live through our nights and gallivant across the globe. Our natural body clocks are at odds with modern routines. As a result, energy levels dim, moods flatten, and our minds have to fight through a fog.

Scientist and engineer Juuso Nissila and Antti Aunio launched Valkee Ltd in 2007, to fight through the long, dark winters of their home in northern Finland. Inspired by our brain as the central ‘mood’ system and our body as the timekeeper, Human Charger – the world’s first bright light headset – brings light when needed most. So we can exist as complete living beings – happy, focused and inspired by another day, no matter the weather or time zone.

Human Charger Product Box



    Exposure to light helps maintain the rhythm of our natural body clock, so with HumanCharger you always feel more energized.


    Use HumanCharger for safe, effective light therapy that will have you always feeling clear and bright on your long haul flight.


    HumanCharger reduces the need for excess sleep, and reduces food cravings associated with jet lag, tiredness and low energy levels.


  • Convenient

    With an ergonomic and stylish design, HumanCharger is the only bright light you can carry in your pocket to use whenever, wherever.

  • Safe and effective

    Using patented technology, HumanCharger provides light therapy that is safer than the sun.

  • Well Built

    With a frame built from a single piece of aluminium, the device is hardwearing and virtually indestructible.

  • Easy

    The rechargeable battery lasts for two weeks at a time.

  • Good looking

    The HumanCharger device features a sleek, small award-winning design with one-button functionality.

  • Comfortable

    The LED earbuds have been designed to be the most comfortable on the market, and fit snugly in a variety of ear shapes.


How HumanCharger Works

Put your HumanCharger on

Just put the HumanCharger LED earbuds in your ears snugly. They’re designed to be most comfortable.

Start your light therapy

Simply push the power button and UV-free, blue-enriched white light starts flowing through the ear canals to the light-sensitive regions of the brain.

Get charged

Wear it for just 12 minutes and you’re done. 12 minutes a day is the ideal amount of light therapy to get fully charged.

Get a free HumanCharger app from your appstore

Visualize your trip, get HumanCharger timing information and connect flight data from TripIt.

appstore googleplay windows playstore


Frequently Asked Questions

Who is HumanCharger for?

We designed HumanCharger for you on the go! You can use it anywhere anytime. If you’re crossing several time zones on your travels, you’re likely to experience some jet lag. Jet lag reduces your productivity and performance edge for business. It takes the energy and enjoyment from the first days of your holiday.

HumanCharger cuts recovery time from jet lag to half it otherwise takes you to get back to normal.

We designed HumanCharger to be used on the go! You can use it anywhere anytime. The HumanCharger has a rechargeable battery that is ready to use for 2 weeks on a single charge. Its compact size makes it’s easy to carry along in your pocket. Thanks to its stylish and discreet design you can use it in a business meeting, on an airplane, in a shopping mall - anywhere. You can just focus on doing exactly what you enjoy the most, without disturbing the person next to you.

HumanCharger is safe to use on airplanes even during takeoff and landing. It does not contain radio transmitters or receivers that are usually not allowed. Please note that the airline’s own practices and rules may vary.

With the App

For trip-specific, optimized timing download the HumanCharger app for your Apple, Android or Windows Phone mobile phone from the phone manufacturer's app store. Enter your flight schedule in the app, and let the app remind you when exactly to use HumanCharger.

Together with the TripIt travel app you’ll be glad to know that HumanCharger app can look up your Tripit schedule automatically, removing the need to re-enter your flight schedule.

Without the App

If you don't have the app, you can approximate a HumanCharger schedule for yourself by following these guidelines. It's not critical to get the timing exactly right, so feel free to use common sense and shift the times slightly to when it's most convenient for you.

During the flight and at the travel destination:

  • Use HumanCharger four times in two hour intervals.
  • Use for as many days as needed till you feel recovered.

If your flight is westward

  • Start in late afternoon (e.g. 3pm, 5pm, 7pm, and 9pm).

If your flight is eastward

  • Start in the early morning (e.g. 8am, 10 am, at noon and 2pm.)

All times are local times at destination. Ideally, you can start preparing for your flight 2-3 days before your trip. Use HumanCharger once every evening, and try to move your bedtime 30-60 minutes later.

Yes, HumanCharger is clinically tested and actually safer for you than sunlight. The enriched blue light from HumanCharger contains no UV rays.

During the 1-year clinical testing in 2013-2014 with trans-atlantic air passengers, none of the people participating in the test experienced any adverse side effects.

The same technology that’s used in HumanCharger has been in commercial use to treat mood disorders since 2010, and with about 70,000 devices in active use around the world the device has maintained an excellent safety record.

HumanCharger was made for accelerating your recovery from the unpleasant symptoms of jet lag. The same technology has been in use since 2010 to prevent and treat mood disorders, but with different timing and duration of use.

HumanCharger headset is ideally used together with the HumanCharger smartphone app, and together they should be used as instructed, for best results with jet lag recovery.

HumanCharger has received in Europe an EU medical device certification for recovery from jet lag.

The device works, when the indicator lights operate as described in the user instructions, and when both ear buds emit bright beams of light.

You know that it helps with your jet lag recovery when you experience less than usual of the typical jet lag symptoms such as irritability, feelings of fatigue, inertia, and forgetfulness, and recover from them noticeably faster than you normally would do.

The HumanCharger clinical jet lag study was published in the April 2015 issue of the peer-reviewed medical journal “Aerospace Medicine and Human Performance”. The article is available to subscribers of the journal, and it can be purchased from the journal separately by accessing the journal’s web page at

Yes absolutely, please feel free to contact us with any questions you may have.

The Science of HumanCharger

Travellers who use HumanCharger recover 50% faster from jet lag symptoms with improvements in mood, feelings of alertness and overall efficiency.

Learn more Download Study
Beat Jet Lag

Buy now

Available at Amazon
Available at Brookstone Available at magellans Available at Target