Galaxy Watch 4 Classic - Specification

Release year:   2021
Network: Bluetooth or Bluetooth/LTE (4G)
Material: Glass front (Gorilla Glass DX), frame in stainless steel 316L or frame in titanium
Screen:

42 mm
1,2” Super AMOLED
396 x 396 pixels (~330 ppi density)  
Corning Gorilla Glass DX

46 mm
1,4” Super AMOLED
450 x 450 pixels (~321 ppi density)
Corning Gorilla Glass DX
Processor:

Exynos W920 (5nm)
Dual core 1,18GHz Cortex-A55
Mali-G68
Remind: 16GB 1,5GB RAM  
Bacteria: Li-Ion 361 mAh, not removable
Wireless (Qi)
Other:

Accelerometer, gyro, compass, barometer, heart rate, SpO2
Wi-Fi 802.11 a/b/g/n, dual band
Bluetooth 5.0
NFC
eSIM
Measure: 42mm – 4,15cm x 4,15cm x 1,12cm
46mm – 4,55cm x 4,55cm x 1,1cm
Weight: 42mm – 46,5g
46mm – 52g