Conclusion
Overall, the Sony Ericsson K660 was a competitively priced device that catered to the needs of the average mobile user in 2008. Its design was compact and colorful, appealing to a youthful market, while offering satisfactory multimedia and connectivity features. Though lacking advanced features like Wi-Fi and a high-resolution camera, its strengths in reliable performance, ease of use, and good battery life made it a commendable choice at an affordable price point of about 100 EUR. Despite its discontinuation, the K660 remains a testament to Sony Ericsson's innovative spirit during a transformative period in mobile technology.