This is another heavy-duty phone from BenQ-Siemens. It is constructed of aluminum and magnesium. This clamshell has a lot of the same features of its sliding counterpart, the EL 71. It has a small, 1-inch color screen outside along with four buttons that for the camera and media. Inside there is an average-sized screen and a sleek, flat aluminum keypad. The camera is placed on the hinge of the clamshell, so the large, inner screen cannot be used for the camera unless it is self-portraits. The camera faces outwards when the clamshell is closed, but then you are restricted to using the small, outer screen. The EF81 is a flagship 3G device slimmer and lighter than e.g. the Moto RAZR V3x and built in magnezium, aluminium and stainless steel.
CNET says: We spotted the EF81 at CeBIT and we liked what we saw. It features a casing made of magnesium, anodised aluminium and hardened sapphire glass, which makes it pretty tough. There's also a MicroSD card slot, a media player that can support almost anything you throw at it, Bluetooth, a 2-megapixel camera and 3G connectivity with video calling capabilities. It's also only 16mm thin, which is 4mm thinner than the V3x and only 1mm thicker than the V3. The problem was that we weren't sure if it was going to make it to the shops, so we held our breath before we got too attached to it.
CeBIT ‘06: BenQ Siemens EF 81 - Gizmodo
BenQ-Siemens EF81 pictures - GSM Arena
BenQ-Siemens EF81 Specifications - GSM Arena
EF-81 discussion forum
BenQ-Siemens EF 81 Der kleine Riese (German)
A collection of live pictures and press pictures of EF-81 - Club Siemens
BenQ-Siemens EF81: Thin 3G clamshell phone - CNet
BenQ-Siemens EF81 3G Phone Review - 3G.co.uk