- The major physical difference between the Mi Band 3 and its predecessor is in the display. The Mi Band 2 had a touchscreen, but it also had a small navigation button under it. The Mi Band 3 replaces that with a full touchscreen, a 0.78-inch OLED display – up from the 0.42-inch display on the Mi Band 2.
- The display sports a 128 x 80 pixel resolution, which is enough room to fit 26 Chinese characters on a single screen. Inside a 110 mAh battery a built-in heart monitor.
- All of these internals will survive in up to 50 meters of water, bringing it into waterproofing parity with the Fitbit Ionic and Versa. On the outside, you've got a new elastomer band that comes in your choice of blue, black or red.
Xiaomi Mi Sport Band 3 with OLED Screen and Heart Rate Monitor, Black