The BenQ-Siemens EF91 was announced in 2006, February With 2.0 inches, 30 x 40 mm, 12.4 cm2 (~29.0% screen-to-body ratio) TFT, 256K colors, Its 3.15 MP, AF rear camera captured crisp photos and Yes video, while the Removable Li-Ion 1000 mAh battery ensured long-lasting usage.