Difference between SAMSUNG GALAXY A51 and REALME REALME WATCH S PRO ? in United States

	PRODUCT 1	PRODUCT 2
	SAMSUNG SAMSUNG GALAXY A51	REALME REALME REALME WATCH S PRO
VERSION
Announced	2019	2020
Release date	2019	2020
NETWORK
Technology	4G	❌
DEVICE
Dimensions	158.5 x 73.6 x 7.9 mm
Weight	172 g
S.I.M.	Single or Dual SIM	❌
Design	32MP	Glass front,stainless steel frame,plastic back / Glass facade,stainless steel frame,plastic back,
Other		Waterproof / Étanche
SCREEN
langfront.Type	Super AMOLED	Super AMOLED
Size	6.5 inches	1.39 inches
Resolution	1080 x 2400 pixels	454 x 454 pixels
Protection	Gorilla Glass 3	Corning Gorilla Glass

PLATFORM
Operating system	Android 10.0; One UI 2	-
Chipset	Exynos 9611 (10nm)	-
Processor	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)	-
GPU	Mali-G72 MP3	-
MEMORY
Card slot	microSD	❌
Internal & RAM	128GB 6GB RAM	-
CAMERA
Main	12 MP + 12 MP + 5 MP + 5 MP	❌
SOUND
Loudspeaker	✔️	❌
Jack 3,5 mm	✔️	❌
CONNECTIVITY
Wifi	✔️	❌
Bluetooth		✔️
GPS	✔️	✔️
NFC	✔️	❌
Radio	FM Radio	❌
USB	2.0,Type-C 1.0,	❌
CHARACTERISTICS
Sensors	Fingerprint (under screen),optical),accelerometer,gyroscope,proximity,compass,ANT+ / Fingerprint (under screen),optical),accelerometer,gyroscope,proximity,compass,ANT+,	Accelerometer,heart rate,SpO2 / Accelerometer,cardiac frequency,SpO2,
Various	Fast Charging 15W / Fast battery charge 15W
BATTERY
Type	4000 mAh	420 mAh

What is the difference between SAMSUNG GALAXY A51 and REALME REALME WATCH S PRO in United States?