Sony Ericsson has refreshed its Walkman line of cell phones once again with the Yendo, which is the first full touch Walkman device from the company. We were quite surprised to see that Yendo also has one of the largest arrays of color options ever presented by the company, including Black, Blue, Green, Orange, Pink, Purple, Red, Silver, White and Yellow. Wow. Here is a gallery of all the different colors.

Yendo features a 2.6 inch screen (262k colors, 320×240) and has design characteristics similar to the XPERIA X10 Mini, including the innovative four corner touch UI. The four corner touch UI in Yendo allows you to access Walkman player, contacts, keypad and more with just one touch. We were surprised to see Sony Ericsson admit the Yendo has a 720MHz processor, but unfortunately that much power is perplexing as it runs a proprietary OS that primarily supports Java applications. We’re going to double check to make sure this is accurate, as there was also mention of a lesser power ARM processor within.

Music lovers will enjoy the MicroSD slot to hold your music collection, FM radio, 3.5mm audio jack and software features such as Touch TrackID, MediaGo and the PlayNow service. You can even set MP3 and AAC ringtones, or listen to your music over Bluetooth stereo (A2DP). Social media aficionados can easily access their friends with the pre-loaded Facebook, Twitter, and Orkut applications. Unfortunately, the camera is rather lackluster at only 2 megapixels with 4x digital zoom, but that is pretty much to be expected for a dedicated music phone. Expect this phone to arrive in most markets around the third quarter of 2010.

Here is a hands-on video of the Yendo we found on YouTube, courtesy of Mobique.com.