ZTE's Nubia Watch, an upgrade to the Nubia Alpha from 2019, sports a 4.01-inch flexible AMOLED display which is wrapped around the wrist strap. The watch includes eSIM connectivity and several health and sports sensors.

Nubia Watch 2020 photo

The Nubia Watch will ship in early August 2020 for 1799 Yuan (around $250 USD) in China.

OLED type: 

4.01" flexible AMOLED

Kyulux - Hyperfluoresence OLED emittersKyulux - Hyperfluoresence OLED emitters