Smartwatches with Multi-day Battery Life

Mi Smart Band 4C
Mi Smart Band 4C
Mi Smart Band 5
Mi Smart Band 5
Mi Watch
Mi Watch
Mi Watch Lite
Mi Watch Lite
POLAR A370
POLAR A370
POLAR GRIT X
POLAR GRIT X
POLAR IGNITE
POLAR IGNITE
POLAR M200
POLAR M200
POLAR M430
POLAR M430
POLAR UNITE
POLAR UNITE
POLAR VANTAGE M
POLAR VANTAGE M
POLAR VINTAGE V2
POLAR VINTAGE V2