There's a power switch on the side of the keypad which allows you to conserve energy when you're not typing. An LED indictor light on the side of the device will let you know when it's done charging.
The most interesting feature of the keypad is undoubtedly its "touch pad" mode. When enabled, this mode allows you to use three rows of keys as a virtual touch pad (think of the mouse touch pad on a laptop). This feature is very useful when browsing the Web as it essentially turns your keypad into a mouse. We were very impressed with the touch-pad mode performance as the responsiveness is spot-on. We'd definitely recommend you calibrate the mode first, which takes all of two seconds.
Priced around $50, the PS3 Wireless Keypad is a bit more expensive than we would have preferred. However, you are getting a keyboard that can act as a mouse and can also be paired with any other compatible Bluetooth advice. If you're someone who makes use of the PS3 chat features, browses the Web, or uses the newly launched PlayStation Home, the keypad is the best accessory for text-based communication.