The Samsung T739 Katalyst was announced in 2007, November. Released 2007, December With 2.1 inches, 13.9 cm2 (~27.4% screen-to-body ratio) TFT, 256K colors, Its 1.3 MP rear camera captured crisp photos and Yes video, while the Removable Li-Ion 960 mAh battery ensured long-lasting usage.