Difference between APPLE IPHONE 8 PLUS and APPLE WATCH SERIES 9 ?

	PRODUCT 1	PRODUCT 2
	APPLE APPLE IPHONE 8 PLUS	APPLE APPLE WATCH SERIES 9
VERSION
Announced		September 2023
Release date	2017	September 2023
NETWORK
Technology		4G
DEVICE
Dimensions		45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)
Weight		42.3 (g41mm), 51.5 (g45mm)
S.I.M.
Design		Glass front,ceramic/sapphire crystal back,stainless steel frame,
Other		IP6X certified,50m water resistant,ECG certified,
SCREEN
langfront.Type		Retina LTPO OLED
Size	5.5 inches - 1080 x 1920 pixels	1.9 inches
Resolution		484 x 396 pixels
Protection		Sapphire crystal glass

PLATFORM
Operating system	iOS 11,upgradable to iOS 12,	watchOS 10
Chipset		Apple S9
Processor	Hexa-core (2x Monsoon + 4x Mistral)	Dual-core
GPU		PowerVR
MEMORY
Card slot		❌
Internal & RAM	64/256 GB, 3 GB RAM	64GB
CAMERA
Main	Dual 12MP & 12MP - Selfie 7 MP	❌
SOUND
Loudspeaker		✔️
Jack 3,5 mm		❌
CONNECTIVITY
Wifi		dual-band
Bluetooth		5.3
GPS		✔️
NFC		✔️
Radio		❌
USB		❌
CHARACTERISTICS
Sensors		Accelerometer,gyro,heart rate,barometer,always-on altimeter,compass,SpO2,VO2max,temperature (body),Temperature sensing,Natural language commands and dictation,Ultra Wideband 2 (UWB) support,
Various		Wireless charging
BATTERY
Type	2691 mAh	308 mAh

What is the difference between APPLE IPHONE 8 PLUS and APPLE WATCH SERIES 9 ?