Difference between SAMSUNG GALAXY WATCH FE and SAMSUNG GALAXY M51 ?

	PRODUCT 1	PRODUCT 2
	SAMSUNG SAMSUNG GALAXY WATCH FE	SAMSUNG SAMSUNG GALAXY M51
VERSION
Announced	June 2024	2020
Release date	June 2024	2020
NETWORK
Technology	4G
DEVICE
Dimensions	40.4 x 39.3 x 9.8 mm (1.59 x 1.55 x 0.39 in)
Weight	26.6 (g0.95 oz)	213 g
S.I.M.		Double SIM
Design	Glass front (sapphire crystal), aluminum frame	32MP
Other	50m/5ATM water resistant, IP68 dust/water resistant, Compatible with standard 20mm straps
SCREEN
langfront.Type	Super AMOLED
Size	1.2 inches	6.7 inches
Resolution	396 x 396 pixels	1080 x 2340 pixels
Protection	Sapphire crystal glass	Gorilla Glass 3
PLATFORM
Operating system	Android Wear OS 4,One UI Watch 5,	Android 10,One UI 2.1,
Chipset	Exynos W920 (5nm)	Qualcomm SDM730 Snapdragon 730G (8nm)
Processor	Dual-core 1.18 GHz Cortex-A55	Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
GPU	Mali-G68	Adreno 618
MEMORY
Card slot	❌	microSDXC
Internal & RAM	16GB 1.5GB RAM	128GB 6GB RAM or 128GB 8GB RAM
CAMERA
Main	❌	64 MP + 12 MP + 5 MP + 5 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	❌	✔️
CONNECTIVITY
Wifi	dual-band	✔️
Bluetooth	5.3	✔️
GPS	✔️	✔️
NFC	✔️	✔️
Radio	❌	FM Radio
USB	❌	2.0,Type-C 1.0,
CHARACTERISTICS
Sensors	Accelerometer,gyro,compass,barometer,heart rate,SpO2,	Fingerprint (lateral),accelerometer,gyroscope,proximity,compass,
Various		25W fast charging,100% in 115 min - Reverse charge,
BATTERY
Type	247 mAh	7000 mAh

What is the difference between SAMSUNG GALAXY WATCH FE and SAMSUNG GALAXY M51 ?