The main feature of the Lenovo Vibe S1 is the presence of two front cameras. In the first image we can see that both front camera modules are located on the right side of the speaker grille. While we do not know exact details about the possibilities of these cameras, but we can assume that they will achieve the bokeh effect to make on selfie portraits more expressive with blur background. It is expected that there is a minimum an 8-megapixels front camera.
As for the other Lenovo S1 Specifications, it will powered by 64-bit Octa-core Snapdragon 615 processor, 2GB of RAM, 16GB of internal memory, which can further expandable via Micro-SD card. It will receive a 5-inch display with a Full-HD resolution of 1920×1080 pixels and pixel density of 441ppi; while there is a 13-megapixels rear camera and runs Android 5.0 Lollipop-based on Vibe UI out of the box. We do not have any information regarding the pricing and release date of the Lenovo Vibe S1. But most likely, in the next few weeks, the manufacturer will provide more information.