LIVE FROM CES 2015, LAS VEGAS: Ambitious Taiwanese device vendor Asus strengthened its portfolio with the launch of a new version of its Zenfone smartphone, a new “optical zoom smartphone”, and “2-in-1 laptops” that the company claims transform into the world’s slimmest Windows tablets.

ASUS ZenFone 2The Zenfone 2 (pictured, left) builds on success of the original smartphone, which Asus chairman Jonney Shih said ships 1.5 million units a month. It boasts a 5.5-inch screen, a 13MP camera and supports LTE-Advanced technology powered by a 64-bit quadcore Intel Atom Z3580 processor. “It’s the world’s first 4GB RAM smartphone,” proclaimed Shih. The Zenfone 2 – updated with a new ZenUI interface and running Android Lollipop – will retail from $199 from March.

ASUS ZenFone ZoomThe ZenFone Zoom (pictured, right) is touted as the world’s thinnest smartphone to feature a 13MP camera with a 3x optical zoom. Also supporting Android’s Lollipop OS, the Zoom will be available in Q2 from $399.

The world’s third-largest tablet vendor also unveiled its “razor-thin 2-in-1 Windows laptops that transform seamlessly into Windows tablets via a smart magnetic hinge.”

Shih also poked fun at Apple, claiming the Transformer Book Chi is “thinner than Air.”

ASUS Transformer Book T300 ChiThe Chi series of products come in three sizes; the flagship T300 Chi (pictured, left) has a 12.5-inch screen, transforming into a tablet that is 7.6mm thin. The 10.1-inch T100 Chi claims a 7.2mm tablet and all-day battery life, and the T90 Chi is an 8.9-inch model weighing 750g. The family of products will be available in February. The T300 will retail from $799, the T100 from $399 and the T90 from $299.