Sony Ericsson has announced Hazel, the newest addition to its line of GreenHeart mobile phones. The slider phone makes use of recycled plastic, low power consumption parts, and minimized packaging as part of the company’s initiative to reduce its CO2 emissions. It features better voice quality, an ergonomic design, and a lot of smart features. It comes customary with a 5.0 megapixel autofocus camera that shoots photos and video that can effortlessly be uploaded to social networks like Facebook, MySpace, and Twitter. The Hazel includes easy access to Google Search and Google Maps. aGPS is also on-board for use with turn-by-turn navigation application Wisepilot.

The Sony Ericsson Hazel will be available in the second quarter of 2010. Pricing details were not announced.