a distance of up to 10 meters (30 ft) from the console. The Wii Remote communicates with the Sensor Bar by infrared, providing pointing functionality over a distance of up to five meters (16 ft) from Wii Remote to Sensor Bar. The controller can be used in either hand; it can also be turned horizontally and used like a Famicom/NES controller, or in some cases (including Excite Truck, Sonic and the Secret Rings, Mario Kart Wii, and Sonic & Sega All-Stars Racing) a steering wheel. It is also possible to play a single-player game with a Wii Remote in each hand, as in the Shooting Range game contained in Wii Play. At E3 2006, a few minor changes were made to the controller from the design presented at the Game Developer's Conference. The controller was made slightly longer, and a speaker was added to the face beneath the center row of buttons. The button became more curved resembling a trigger. The "Start" and "Select" buttons were changed to plus and minus , and the and buttons were changed to and to differentiate them from the and buttons, while also evoking the keypad of typical television remotes. Also, the symbol on the button was changed from a blue dot to a shape resembling a home/house, the shape of was made circular rather than rectangular, and the blue LEDs indicating player number are now labeled using 1 to 4 small raised dots instead of numbers 1 to 4, resembling the dots used to mark the four controller ports of the GameCube console. The Nintendo logo at the bottom of the controller face was replaced with the Wii logo. Also, the expansion port was redesigned, with expansion plugs featuring a smaller snap-on design. The Wii Remote had the capability of turning the main console's power on or off remotely with a power button, further reinforcing the impression that it looks like a television remote. The blue LEDs also indicate the battery's state: on pressing any button (other than the power button) while the controller is not being used to play games, four LEDs flash to indicate full battery, three for 75%, two for 50%, and one for 25% life remaining. Similarities have been noted between the Wii Remote and an early Dreamcast controller prototype. In the Red Steel trailer shown at E3 2006, the Wii Remote had a smaller circular shaped image sensor