I took delivery of one (SJ4000) yesterday. I ordered it on the back of the Techmoan reviews and the footage I saw on there. It seems to be a rival for the older GoPros really rather than the newer ones (no wifi connectivity etc).
Build quality seems good but I haven’t had a chance to do any proper footage yet. I shot a quick video in the living room and uploaded it to my Macbook Pro which has a retina screen. The image quality looked excellent.
Unboxing it, it comes with plenty of mounts, including a bike mount. I ordered a chest mount too as this isn’t included in the box.
In all, including the chest mount, 2 spare batteries (it had one in the camera too – so 3 total) and a 32gb Sandisk micro SD, it came to £82 inc delivery and I didn’t get hit for duty. Delivery took 3 weeks.
Here’s where I ordered from:
Fox Offer
I’m off on hols but will post some footage when I get back. Have a look at Techmoan and search for SJ4000 on YouTube to get an idea of quality in the meantime….
EDIT: In lieu of the above post – Fox Offer do a full range of spares and the SJ4000 is compatible with Go Pro stuff.