The Sony Ericsson W850 is a tri-band (900/1800/1900 MHz) GSM and 2100Mhz UMTS capable phone in slider form-factor and is part of the Walkman series. It has a 262k color 240x320 pixels display, 2-megapixel camera with flash and an additional one for video calling, music player with broad file format support, Memory Stick Pro Duo cards slot and Bluetooth connectivity.