LKstore - Xiaomi Mi Band 4 Global Version (English) Battery Life: 135mAh battery capacity built in the Mi Band 4, max working time up to 20 days after a full charging. Health
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Raptical Computers - XIAOMI MI 4 Band Battery Life: 135mAh battery capacity built in the Mi Band 4, max working time up to 20 days after a full charging. Health Monitoring: Support
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