Samsung Galaxy Watch 4

wikipedia:Samsung Galaxy Watch 4 (August 2021)

• Wear OS
• blood pressure monitoring
• Qi Wireless charging

• Galaxy Watch 3 (Aug 2020)
• Bluetooth 5.0
• eSIM

Related

• A-GPS, GLONASS, Beidou, Galileo
• Samsung Galaxy Watch 5 (Aug 2022)

See also

• Wristwatch, Google Wear OS, Watch 6, Watch 5, Watch 4, Watch 3, Mi Watch, Mi Watch Lite, Apple watch, Google Pixel Watch, Samsung Galaxy Watch 7
• Samsung Galaxy, One UI: A70, S10, S20, S21, S22 Ultra, S23, S24 (Plus, Ultra), A10, A11, A12, A13, A14, A15, A16, Fold 3, Fold 4, Fold 5, Flip 3, Flip 4, Flip 5, Galaxy Unpacked, Galaxy Buds2 Pro, Galaxy Watch, Samsung Cloud, Samsung Galaxy A series