Samsung's Galaxy Watch4 features a 1.36" 450x450 Super AMOLED display or a 1.19" 396x396 Super AMOLED on the smaller variant. It uses Samsung's new One UI Watch operating system (based on Wear OS), bioactive sensors (PPG, ECG, BIA),Exynos W920, LTE, 1.5GB of RAM and 16 GB of storage.
There is also a Galaxy Watch 4 variant, with similar specification but a slightly different design - a rotating bezel and stainless steel body (instead of the rubber band and the so-called digital bezel).
Apple's sixth-generation Watch wearable sports a 40 mm LTPO 324x394 AMOLED display (or 44 mm 368x448 on the larger edition). The Watch Series 6 features Apple's latest S6 processor, 32GB of storage, and a heart rate, blood oxygen and ECG sensors.
The Watch SE has the same displays, but features a slower processor (Apple S5), and doe not include the blood oxygen and ECG sensors.
The TicWatch Pro X is a Google Wear smartwatch that features dual displays - there is a 1.39" 454×454 AMOLED display (likely produced by BOE), and on top of that there is a transparent FSTN LCD display. The watch uses the LCD (which can last up to 45 days) to conserve power over the AMOLED display (which lasts for up to 4 days).
Other features include a Qualcomm Snapdragon SD4100 , 1GB of RAM, 8 GB of storage and several sensors.
Amazon's Halo View is a fitness tracker that sports a color AMOLED display (Amazon does not disclose the size, but it looks to be around 1.5-inch), haptic feedback, optical heart rate monitor, and skin temperature sensor.
The Halo View costs $79.99, with an optional $4 monthly subsciption for many added features such as body composition, activity intensity, fitness and nutrition programs and more.
The Meizu Watch is a smartwatch with a 1.78-inch 368x448 (326 PPI) AMOLED display, snapdragon wear 4100, wear OS, LTE eSIM, 1GB of RAM, 8 GB of storage, heart rate monitor, SpO2 sensor and a battery that lasts for 36 hours.
The Meizu Watch is now shipping in China for 1,500 CNY (around $235).
Huawei's Watch 3 smartwatch features a 1.43-inch 466x466 1000-nits round AMOLED display, 2GB of RAM, 16 of storage and Huawei's own Harmony OS. The watch offers LTE and GPS connectivity, and has heart rate, thermometer and SpO2 sensors.
The Watch 3 Pro is similar but is built from higher-end materials. Both devices are expected to ship by the end of June 2021.