Xiaomi Redmi Watch 4

Dimensions: 47.5mm x 41.1mm x 10.5mm (excludes strap and protrusions) | 31.5g weight (without strap) | Aluminum alloy frame | TPU strap | Heart rate and blood oxygen sensors | GPS, Galileo, Glonass, Beidou, and QZSS satellite positioning systems | 470mAh battery with 20-day use time | 1.97" square AMOLED display | 60Hz refresh rate | 600 nits brightness | Built-in GNSS and speaker | Bluetooth call support | 5ATM water resistance.