Not much surrounding the Google Nexus 5 remains a secret, with a prototype version of the LG-made smartphone appearing in a seven-minute video over the weekend. The device, labelled with 'Not for Sale' on the back, is shown off from all angles, and is seen running what appears to be an early version of Android 4.4, although listed as 'KeyLimePie'.

The video doesn't show off a great deal of the phone's features, but it provides a clear look at what the device will look at after it was first accidentally exposed in a Google-made video.

The rumored specifications for the Nexus 5 include a 4.95-inch 1920 x 1080 display, and a Snapdragon 800 SoC with a 2.3 GHz quad-core Krait 400 CPU and Adreno 330 GPU. Like LG's flagship G2, the Nexus 5 also includes 2 GB of RAM, LTE radios, NFC, Bluetooth 4.0, and an optically-stabilized camera, albeit at a lower resolution of 8-megapixels.

It's expected the device will come in both 16 GB and 32 GB variants, with the former shown off in the video above, although there will be no microSD card expansion slot. Overall, the device is close to the same size as the Nexus 4, and features a slightly larger 2,300 mAh battery.

Google has phased out the Nexus 4 from their hardware inventory, indicating a new Nexus device will be announced shortly. It's rumored the device will keep the tradition of being available unlocked through the Play Store at a low cost, although as Google has yet to confirm any information surrounding the device, we'll just have to wait and see.