Difference between REALME WATCH S and VIVO Y21G ?

	PRODUCT 1	PRODUCT 2
	REALME REALME WATCH S	VIVO VIVO Y21G
VERSION
Announced	2020	April 2022
Release date	2020	April 2022
NETWORK
Technology	❌	4G
DEVICE
Dimensions	47 x 47 x 12 mm (1.85 x 1.85 x 0.47 in)	164.3 x 76.1 x 8 mm (6.47 x 3.00 x 0.31 in)
Weight	48 (g1.69 oz)	182 (g6.42 oz)
S.I.M.	❌	Dual SIM
Design	Glass front,aluminum frame,plastic back / Glass facade,aluminum frame,plastic back,	8 MP (1080p@30fps)
Other	IP68 dust/water resistant -- IP68 dust and water resistant
SCREEN
langfront.Type	IPS LCD	IPS LCD
Size	1.3 inches	6.51 inches
Resolution	360 x 360 pixels	720 x 1600 pixels
Protection	Corning Gorilla Glass
PLATFORM
Operating system	--	Android 11,Funtouch 11.1,
Chipset	--	Mediatek MT6769 Helio G70 (12nm)
Processor	--	Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55)
GPU	--	Mali-G52 2EEMC2
MEMORY
Card slot	❌	microSDXC
Internal & RAM	--	64GB 4GB RAM
CAMERA
Main	❌	13 MP + 2 MP
SOUND
Loudspeaker	❌	✔️
Jack 3,5 mm	❌	✔️
CONNECTIVITY
Wifi		dual-band,Wi-Fi Direct,hotspot,
Bluetooth		5.0
GPS		Yes,A-GPS,GLONASS,GALILEO,BDS,
NFC		❌
Radio		FM Radio
USB		USB Type-C 2.0
CHARACTERISTICS
Sensors	Accelerometer,heart rate,SpO2 / Accelerometer,cardiac frequency,SpO2,	Fingerprint (side-mounted),accelerometer,proximity,compass,
Various	Wireless charging / Chargement sans fil	Fast Charging 18W
BATTERY
Type	390 mAh	5000 mAh

What is the difference between REALME WATCH S and VIVO Y21G ?