Imagine being able to charge your phone with nothing more than a summer breeze or the rays of the sun. That’s the idea behind the Aeolus phone concept, an eco-friendly, low-energy cell phone made of renewable materials that lets you charge its battery without any reliance on grid electricity at all.

The onboard battery can be charged by a gentle breeze thanks to the small fan at the top of the phone’s body. For extra power the Aeolus can be strapped to a bike or a car window with a special tripod. When there’s no wind available and you’re simply out enjoying a nice day, the solar panels take over providing power to the battery.

The eco-friendly features don’t stop with the battery, however. The body of the phone is made with renewable materials, and the small single-color  LCD screen is energy-efficient and simple to conserve power.

The concept is from designer Cyrene Quiamco, who wanted to create an eco-friendly phone with an eco-chic appeal. The shape of the phone recalls a leaf or seed from nature, reinforcing its connection to the environment. The Aeolus is still in the concept phase of its design, but it’s an interesting direction to take phone design in for future generations.