The Nokia 7900 Crystal Prism was announced in 2008, January. Released 2008, June With 2.0 inches, 12.4 cm2 (~24.6% screen-to-body ratio) OLED, 16M colors, Its 2 MP rear camera captured crisp photos and QCIF video, while the Removable Li-Ion 850 mAh battery (BL-6P) ensured long-lasting usage.