Features
The Mi Band 2 has an IP67 water and dust-resistance certification, meaning you can wear it in the shower and it’s okay to get a little splash of water when you’re washing the dishes or your hands. If it as good as the previous models, then I can attest that showering with it is indeed not a problem at all.
As far as tracking goes, you still get an optical heart rate monitor that Xiaomi claims will offer improved accuracy over the previous Mi Band Pulse. A new pedometer algorithm coupled with ultra low power accelerometers is also designed to deliver improvements to step tracking. Testing the accuracy the pedometer against the likes of other fitness trackers I have at had (Fitbit Flex, Jawbone UP 2, Apple Watch), I found the accuracy to have about a 5% error from the rest of the others. Of course, sleep tracking is still a key feature, breaking down your deep sleep and light sleep patterns, and this is only possible with battery life that lasts more than a day.
A built-in vibration motor also means the introduction of inactivity alerts, giving you buzz when you’ve been sitting too long at your desk. With the addition of a OLED display, you do get some smartphone notifications. The Mi Band 2 will vibrate for incoming calls and texts. It’s pretty basic, but that’s no real surprise here and like its predecessor, the Mi Band 2 can be used to unlock a selection of Android smartphones.
MI频段2具有70mAh电池，电池寿命确实取决于用户到用户，以及您启用的功能。就个人而言，除了用于来电和文本的日常步骤数和振动，我没有启用任何其他功能，有助于延长电池寿命。从全额充电开始3周的测试开始，我仍然只剩下40％的电池充电，所以官方规定的电池寿命为20天，非常保留。
