Despite of having fake units in the market, I still bought it through Lazada.com.ph with CWL as a merchandiser. I received it three days after placing an order. I checked it and get it verified on the sjcam website. The unit came in with a lot of accessories which xiaomi yi camera does not have.
See the specifications below:
See the sample photos and videos taken from this device with default settings:
action on the road
clearly shot from the beach
Watch it in HD for better quality.
I would say, SJ CAM 4000 is just like a basic camera with a wide lens in it. There's nothing fancy about this device, but If you are on a tight budget like me this device is a good choice. Quality photos are good and just needed a little enhancement via photoshop or snapspeed.