Difference between REALME WATCH 2 and VIVO Y91 ? in countries.United States

	PRODUCT 1	PRODUCT 2
	REALME REALME WATCH 2	VIVO VIVO Y91
VERSION
Announced	May 2021	2019
Release date	May 2021	2019
NETWORK
Technology	❌
DEVICE
Dimensions		155.1 x 75.1 x 8.3 mm
Weight	38 (g1.34 oz)	163.5 g
S.I.M.	❌	Duel
Design	Glass front,plastic back,plastic frame / Glass facade,plastic back,plastic frame,	1080p@30fps
Other	IP68 dust/water resistant - Not swim proof
SCREEN
langfront.Type	IPS LCD
Size	1.4 inches	6.22 inches - 720 x 1520 pixels
Resolution	320 x 320 pixels
Protection

PLATFORM
Operating system	--	Android 8.1 (Oreo)
Chipset		Mediatek MT6762 Helio P22 (12nm)
Processor	--	Octa-core 2.0 GHz Cortex-A53
GPU		PowerVR GE8320
MEMORY
Card slot	❌	microSD, up to 256 GB
Internal & RAM	--	64 GB, 3 GB RAM
CAMERA
Main	❌	13 MP + 2 MP - Selfie 8 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 / Accelerometer,cardiac frequency,SpO2,	Fingerprint reader
Various		accelerometer,proximity,compass,
BATTERY
Type	Li-Ion langproduct.315 mAh	4030 mAh

What is the difference between REALME WATCH 2 and VIVO Y91 in countries.United States?