The Mi Band 4 undercuts rival fitness bands with excellent features at half the price.
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I've tried a lot of fitness trackers, and this under-$50 one is truly great - CNET
Xiaomi Mi Smart Band 4 Impressions: All The Fitness Tracker You Need
Step up, live more. Full color display and heart rate monitor. Get a wider, more colorful view right on your wrist.
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