Difference between OPPO WATCH 3 PRO and VIVO Y21E ?

	PRODUCT 1	PRODUCT 2
	OPPO OPPO WATCH 3 PRO	VIVO VIVO Y21E
VERSION
Announced	August 2022	January 2022
Release date	August 2022	January 2022
NETWORK
Technology	4G	4G
DEVICE
Dimensions	50.4 x 38.5 x 12.8 mm (1.98 x 1.52 x 0.50 in)
Weight	37.5 (g1.34 oz)	182 (g6.42 oz)
S.I.M.		Dual SIM
Design	Glass front,aluminum frame,	8 MP (1080p@30fps)
Other	5ATM water resistant
SCREEN
langfront.Type	LTPO AMOLED	IPS LCD
Size	1.91 inches	6.51 inches
Resolution	378 x 496 pixels	720 x 1600 pixels
Protection
PLATFORM
Operating system	Android Wear OS	Android 11,Funtouch 12,
Chipset	Qualcomm Snapdragon W5+ Gen 1 (4nm)	Qualcomm SM6225 Snapdragon 680 4G (6nm)
Processor	Quad-core 1.7 GHz Cortex-A53	Octa-core (4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver)
GPU	Adreno A702	Adreno 610
MEMORY
Card slot	❌	microSDXC
Internal & RAM	32GB 1GB RAM	64GB 3GB RAM
CAMERA
Main	❌	13 MP + 2 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	❌	✔️
CONNECTIVITY
Wifi		dual-band,Wi-Fi Direct,hotspot,
Bluetooth	5.0	5.0
GPS	✔️	GPS,A-GPS,GLONASS,GALILEO,BDS,QZSS,
NFC	✔️	❌
Radio	❌	FM Radio
USB	❌	Type-C 2.0
CHARACTERISTICS
Sensors	Accelerometer,gyro,heart rate,compass,barometer,SpO2,	Fingerprint (side-mounted),accelerometer,proximity,compass / Fingerprint (side mounted),accelerometer,proximity,compass,
Various		Fast charging 18W - Reverse charging
BATTERY
Type	550 mAh	5000 mAh

What is the difference between OPPO WATCH 3 PRO and VIVO Y21E ?