The sequel to one of the most popular wearables will be unveiled next week

The sequel to one of the world's top-selling wearables will be unveiled in exactly one week. The Xiaomi Mi Band 4 is expected to make its debut on that date at an event in China. Based on leaks, the latest version of the affordable fitness tracker is going to sport a color display for the very first time. Other improvements that we expect to see include a larger 135mAh battery and Bluetooth 5.0 LE connectivity. While there have been rumors that the Mi Band 4 will include a feature allowing users to scan for abnormal heart rhythms, so far there is no indication that an electrocardiogram monitor will be offered.

The currently available Mi Band 3 has been a huge hit due to its low price; the device can be purchased on Amazon for $30. But the price belies the Mi Band's functionality. It can monitor a user's heartbeat, track a wearer's physical activity and can even do something that the Apple Watch can't do at present-monitor the quality of Mi Band owner's sleep. And one of the two variants that will be available will have NFC so that the Mi Band 4 can support mobile payment services like Alipay; that model will be available in China only. The other version of the fitness tracker will be sold internationally and that should include the U.S.

A poster for the device was spotted on Weibo, revealing the color display and the June 11th unveiling date. Assuming that this is legit, we should have more information next week on what is shaping up to be one of the most popular wearables of 2019.