The original Passport design was produced in Black, with both White and a limited edition Red coloured versions announced on November 24, 2014. Three additional variations were later released: An AT&T version, a limited edition Black & Gold version and The Silver Edition. The AT&T version, announced at the 2015 Consumer Electronics Show in Las Vegas Nevada and later made available on February 20th, 2015 has a rounded frame requested by the carrier rather than the hard-edged shape of the international version. The limited edition Black & Gold version was a limited run of only 50 devices that featured a gold coloured rim in place of the stainless steal and came with a Valextra soft calf leather case and was engraved with the production number. While BlackBerry did not disclose the number made available on its site, the device sold out the same day as it was made available. The Silver Edition retains the rounded corners similar to the AT&T version at the bottom edge and has a metallic colour scheme with a reinforced steel frame to provide extra strength and durability. The keyboard in this version was improved to make typing easier while the corners and a diamond weave pattern on the back were intended to improve grip. Finally, bevelled edges around the front facing camera and a raised border around the rear facing camera were added to protect the lenses from wear and tear.