Global sales of Sony Ericsson's popular Walkman-brand mobile phones have reached about 45 million units since the launch of the W800i in August 2005. The new W910i slider camera-phone is expected to build on that growth. The slim handset with a 2-megapixel camera offers high-speed data packet access network support, which means the transfer, or download, of music, videos, games and content at speeds of up to 3.6 megabits per second. More than 900 MP3 songs can be stored on the 1-gigabyte Memory Stick Micro. It accommodates up to 4GB of extra memory. Horizontally or vertically, the phone lets you view and play as you like, thanks to the bright 2.4-inch screen. The 'shake' option allows the user to control games and change music tracks with just a flick of the wrist. Available in red and black, the W910i Walkman camera-phone costs about HK$3,900.