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The K5 and K5 Plus run Android 5.1 Lollipop, an older version of Google's software.
The Vibe K5 and the Vibe K5 Plus look identical from the outside.
The differences are mostly on the inside, with the K5 Plus boasting a more powerful processor and a 1080p full HD screen rather than the K5's 720p display.
The phones come in grey, silver or champagne gold.
The chrome band around the edge makes the K5 pair look more than a little reminiscent of the iPhone.
Unlike the iPhone, the back of the K5 comes off.
Under the removable battery is space for two SIM cards so you can have two numbers in one phone.
Here's the 13-megapixel camera.
To play this hidden Android Lollipop-themed game (on the K5 and on any Android Lollipop device), go to Settings, About Device, and tap repeatedly on Android Version.
The usual Android home buttons.
The Vibe pair will be on sale in emerging markets, but not the US or most of Europe.
The Vibe K5 will cost $129 and the Vibe K5 Plus $149.
Lenvovo showed us their new phones, the Vibe K5 and the Vibe K5 Plus. From the outside they look exactly the same.