Difference between XIAOMI MI WATCH REVOLVE ACTIVE and OPPO A9 (2020) ? in countries.United States

	PRODUCT 1	PRODUCT 2
	XIAOMI XIAOMI MI WATCH REVOLVE ACTIVE	OPPO OPPO A9 (2020)
VERSION
Announced	June 2021	2019
Release date	June 2021	2019
NETWORK
Technology	❌
DEVICE
Dimensions		163.6 x 75.6 x 9.1 mm
Weight	32 (g1.13 oz)	195 g
S.I.M.	❌	Double SIM
Design	Glass front,plastic back,plastic frame / Glass facade,plastic back,plastic frame,	16MP
Other	Waterproof (5ATM) / Waterproof (5ATM)
SCREEN
langfront.Type	AMOLED
Size	1.39 inches	6.5 inches
Resolution	454 x 454 pixels	720 x 1600 pixels
Protection		Gorilla Glass 3

PLATFORM
Operating system	Proprietary OS	Android 9.0 (Pie); ColorOS 6.1
Chipset		Qualcomm SDM665 Snapdragon 665 (11nm)
Processor	--	Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU		Adreno 610
MEMORY
Card slot	❌	microSD, jusqu`à 256 Go
Internal & RAM	--	128GB 4GB RAM
CAMERA
Main	❌	48 MP + 8 MP + 2 MP + 2 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	❌	✔️
CONNECTIVITY
Wifi	❌	✔️
Bluetooth	✔️	✔️
GPS	✔️	✔️
NFC	❌
Radio	❌	FM Radio
USB	❌	microUSB 2.0
CHARACTERISTICS
Sensors	Accelerometer,heart rate,SpO2,gyro,barometer,compass / Accelerometer,cardiac frequency,SpO2,gyroscope,barometer,compass,	Fingerprint (rear mounted),accelerometer,gyroscope,proximity,compass,
Various		10W Fast Battery Charging - Reverse Charging
BATTERY
Type	420 mAh	5000 mAh

What is the difference between XIAOMI MI WATCH REVOLVE ACTIVE and OPPO A9 (2020) in countries.United States?