Logitech has announced the Logitech Wireless Solar Keyboard K750 for Mac. It's the company's first solar-powered keyboard, for environmentally conscious Mac users. The K750 offers the standard Mac layout, with the addition of brightness and music controls, eject keys, and command keys. It also offers a full numeric keypad. Along the top of the K750 you can see the solar cells that keep the keyboard charged. They work off of both sunlight and indoor light. The keyboards come in five colors: all-silver, all-black, or silver with pink, green, or red solar strips at the top.
Overall, the K750 has a nice design and form factor. Not having to keep buying batteries is always a plus, and its 1/3 of an inch thinness is appreciated. However, the big drawback of the K750 is that it doesn't connect via Bluetooth. Instead it uses a proprietary Logitech dongle known as the Logitech Unifying receiver that needs to stay plugged in to your Mac in order for the keyboard to stay connected. Also, while Logitech says the keyboard itself works with your Mac right out of the box without requiring software, the Unifying dongle does need software to be compatible.
I like my wireless accessories to use Bluetooth, but if the environmental aspects of the keyboard are more important to you than the connection technology it uses, the K750 is a fine choice for you. The Logitech Wireless Solar Keyboard K750 for Mac costs US$59.99 and ships later this month.