The Oppo Watch comes in two distinct size variants - 41mm and 46mm. That is roughly similar to the 40mm and 44mm versions that the Apple Watch is
OPPO Watch review — First Usable Smartwatch on WearOS
⌚ Large Screen & Customizable Dials - PUBU smart watches has 1.96-inch HD full touch colorful screen with 320*386 resolution. The system offers a
Smart Watch(Answer/Make Call), 1.96 Touch Screen Smartwatch for Android and iOS Phones with Heart Rate Monitor, Blood Oxygen Tracking, Sleep Monitor
Oppo Watch review
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OPPO Health & Fitness Smart Watch(WiFi) 41mm, Heart Rate Monitor,Exercise Tracking, Up to 14 Days Battery Life(in Saver Mode), 4.06 cm (1.6) AMOLED Display, in-Built GPS(Black) : : Electronics
Oppo Watch review
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Go bigger and smarter with the new Amazfit Bip 5 smart watch. From fitness & outdoor sports to fun apps and games, this digital watch is great for adult men, women and even kids. Along with its super large screen, this smartwatch supports Bluetooth calling and is compatible with Apple, Android or other mobile devices.
Amazfit Bip 5 Smartwatch - Pink
OPPO Watch review — First Usable Smartwatch on WearOS
OnePlus Open Review: Sleek Hardware Isn't Enough to Take on Samsung - CNET