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Xiaomi Mi Band 4 with color screen, bigger battery to be announced on June 11 [Update: Official images]
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Instructions: Install a new update on your Mi Band 4. You will get the official version of the Czech language - Xiaomi Planet
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Mi Band 4, Mi Band 3 Update Allows Users to Unlock Windows 10 Laptops Straight from Fitness Tracker: Report | Technology News
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