The screen is bigger here than on the Xiaomi Mi Band 2 – it's a 0.78-inch OLED panel that sits lengthways along your wrist. It's a touchscreen, so you can swipe your finger across it to scroll through the menus, although we found that feature quite temperamental.
It often took a few taps or drags on the screen to get into the menus we needed, so this isn't the easiest device to interact with. That issue got better with time as we got used to the device, but we still found ourselves having to swipe or tap repeatedly as the screen wasn't responsive enough.
There's a touch key at the bottom of the screen which you can hold down to activate features, or press to go back. This worked quickly whenever we gave it a quick tap when navigating the menus.
The screen itself is black and white, with a faint blue tinge to the white, so you won't be getting a vibrant readout of your stats, but the resolution is good at 128 x 80 pixels. If you want a device that's bolder and can give all of your stats on a large display, you'll want something bigger and more expensive like the Samsung Gear Fit 2 Pro.
the Xiaomi Mi Band 3 swimming or into the shower, as it's also waterproof to 50 meters – that's a useful feature, and one you won't find in some trackers that cost a good deal more.
You've also got the choice of three different bands for the Mi Band 3: there's a black design – the one pictured in this review – as well as orange and blue.
The strap itself is made of silicone, and we found it comfortable to wear throughout the day – even when sweating – but it doesn't look particularly stylish. Xiaomi doesn't offer any other materials for straps yet, but based on what we saw after the Mi Band 2 was released we'd expect to see a variety of third-party retailers selling alternative straps soon.
During our testing period we found the Xiaomi Mi Band 3 worked speedily, although we don't know exactly what tech is powering this device.
Xiaomi has yet to share the internal spec for the Mi Band 3, but everything worked well throughout our testing, with the various features firing up quickly.
The Band 3 offers sleep tracking, and thanks to the slim and light design we didn't notice we were still wearing the tracker in bed, even on some warm and uncomfortable evenings.
The sleep stats it records are more limited than on a lot of top-end trackers. It gives you stats for sleep duration, when you've woken up and when you're in deep and light sleep.
It doesn't provide details on your REM, like some top-end Fitbit products or a dedicated tracker like the Nokia Sleep. But if you just want to know how many times you woke up in the night, and get a bit of advice on how to improve your sleeping patterns, the Mi Band 3 will probably suit you.
As mentioned, there's also NFC on another Chinese version of the Xiaomi Mi Band 3, allowing you to use it for contactless payments, but there's currently no word on whether other regions will get that functionality.
Weather information is displayed by default – you'll get the high and low temperatures for the day, and the next couple of days, as well as a brief forecast
You can also have a variety of notifications beamed to your wrist, including calls, texts, alarms, reminders and app notifications from a variety of third-party services.
These are all easy to enable via the app, and while you won't be able to reply from your wrist the Band 3 will give you a quick buzz when you're getting a phone call, for example, so you can take your phone from your pocket to check it.
The Xiaomi Mi Band 3 is powered by a 110mAh battery. We used the tracker for two weeks for our final review, and after that period it had 72% battery left.
That was from a full charge with quite extensive usage, so it should easily last for at least a month, and probably closer to six weeks, from a single charge.
Xiaomi claims its band will last for 20 days in standby mode, but we found it lasted longer even when in use, so you won't have to recharge this every night like some fitness trackers.
It's a good job the battery lasts as long as it does, as charging up the Xiaomi Mi Band 3 isn't the easiest thing to do. You have to pop the tracker out of its band and slot it into a proprietary charger, so this won't work with your average micro USB or USB-C cable.
Once that's done, however, it does charge quickly – we found that it went from around 50% to 100% in about half an hour. You won't have to charge the Mi Band 3 that often – but make sure you don't lose the charger, as you won't be able to use the chargers from your other devices.