Item is a knockoff and not a legitimate Xiaomi Mi Band 4. Told seller and seller advises that this is the "upgraded" version with no software bugs like the original. Seller wouldn't complete full refund but then I made a request to Amazon who then provided me with my full refund.

I have been very impressed with the Mi Smart Band 4, it is not perfect but at this price, there is very little to find fault with. It also will outlast the Energiser bunning on one charge which is awesome.

When it comes to smart band value for money the Mi Band Xiaomi is always the first to come to mind. The new generation, then Mi Band 4 , carries on the already well-known formula of the brand keeping more or less the same design of the previous generation, an advantageous price and introduces new...

AMOLED color display; Integrated features; Waterproof up to 5 ATMs; Value for money

No integrated GPS

Xiaomi Mi Band 4: The big upgrade in this year's Mi Band 4 is the colour AMOLED display and the ability to track swimming. Here's our r...

You get a whole lot of wearable for your £35, with big improvements on the Mi Band 3

Real improvements over the Mi Band 3; Better run tracking; Colour screen is excellent; Incredible battery life;

The Mi Fit app is a weak link;