Xiaomi has announced the Mi Band 4, the fourth generation of the known budget Smartband repeatedly the subject of official rumors and teasers in recent weeks. Xiaomi Mi Band 4 is equipped with a 0.95-inch AMOLED color touch display with 120×240 pixel resolution and 16,000 colors, 135mAh battery (an increase compared to the one present on the Mi Band 3 …
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