Apple Wireless Keyboard (2007)
The desktop keyboard went pocketable: ultra-thin aluminium, three batteries and a MacBook layout, without a numeric keypad.

© Roadmr · CC BY-SA 4.0 ↗ Resized, no crop or retouching.
Specs
| Connectivity | Bluetooth |
| Power | 3 AA batteries |
| Key feature | first aluminium version of the Wireless Keyboard (A1255), per Wikipedia |
Launch
Apple announced it on August 7, 2007 alongside the new aluminium iMac, per its official press release: a compact option for anyone wanting a cable-free desktop, shipping by the end of August. The release set three US prices: $79 standalone, $30 as a build-to-order option with the iMac, and $50 together with the wireless Mighty Mouse. Per Wikipedia, it was the second generation of the Wireless Keyboard, model A1255.
Marketing
It shared the design language of the wired Apple Keyboard introduced the same day: an aluminium enclosure with the same slim profile and new functions on the function keys, such as media controls and Dashboard, per the press release and Wikipedia. Wikipedia adds that its layout resembled the MacBook's, with no numeric keypad, the power button on the right-hand side and protection against accidental Caps Lock activation.
Flaws and fixes
Compactness came at a price: it lost the numeric keypad and the USB ports of the wired model, per Wikipedia. It ran on three AA batteries, one fewer than its 2003 predecessor. In October 2009 the A1314 revision arrived, cutting power needs to two batteries, per Wikipedia.