The all new HTC One has already leaked more times that you can count. Now, just a day before its official unveiling, a full hands-on detailed review of the handset has been accidentally posted on YouTube. The 14-minute video reveals all the features and specs of the One and even shows the dual-rear cameras on the back in action. 

Internally, the all new One is going to be powered by a Snapdragon 801 processor running at 2.3GHz, an Adreno 330 GPU, 2GB of RAM, microSD card slot and a 5-inch screen with 1080p resolution. HTC has also retained the 4.1MP UltraPixel camera on the back of the handset but has complimented it with another 2MP camera for some 3D and re-focus effects. There is also a Dual-LED ‘Blitz’ flash that have different colors tones for varying situations.

Check out the full leaked video review (in Dutch) below:

While the new One would be coming with a 2600mAh battery, it will be capable of providing up to 20 hours of talk time and nearly 496 hours of standby time. HTC has also included an extremely low-power mode on the handset where it would be capable of lasting nearly 15 hours on just 5% battery. It has also teamed up with Fitbit to pre-load an S-Health like fitness app on the phone that will track all your movements throughout the day and the calories burned.

HTC will be unveiling the new One tomorrow (March 25th), with the handset widely expected to go on sale in major stores across the United States almost immediately.