This keyboard can use the power of the ambient light in the room - so no need to direct sunlight, meaning you'll never have to bother with a battery charge. According to Logitech, with a full charge K750 can work up to three months even in total darkness.
Solar Logitech Keyboard K750 is equipped with advanced 2.4GHz wireless connectivity and nano receiver Unifier. The keyboard has a PVC-free construction and design oncave key-cap. Because specially designed for Mac users, the layout & the number keys are also designed for Mac users.
Logitech Wireless Keyboard K750 Solar for Mac comes in colors :