Apple Watch Series 7

Apple Watch 7 vs Apple Watch 6

Apple Watch 7Apple Watch 6
GSM / HSPA / LTEGSM / HSPA / LTE
2021, September 142020, September 15
44 x 38 x 10.4 mm (1.73 x 1.50 x 0.41 in)
32/38.8 g (1.13 oz)47.1 g (1.66 oz)
Glass front, ceramic/sapphire crystal back, aluminum frameGlass front (Sapphire crystal), ceramic/sapphire crystal back, stainless steel frame
eSIMeSIM
IP6X certified 
50m water resistant
ECG certified (region dependent SW application; HW available on all models)
50m water resistant
ECG certified (region dependent SW application; HW available on all models)
AMOLEDRetina LTPO OLED, 1000 nits (peak)
1.78 inches
448 x 368 pixels448 x 368 pixels (~326 ppi density)
Ion-X strengthened glassSapphire crystal glass
Always-on displayAlways-on display
watchOS 8.0watchOS 7.0, upgradable to 8.0
Apple S7Apple S6
Dual-core
PowerVR
32GB 1GB RAM
Wi-Fi 802.11 b/g/n, dual-bandWi-Fi 802.11 b/g/n, dual-band
5.0, A2DP, LE
Yes, with A-GPS, GLONASS, GALILEO, QZSS
Accelerometer, gyro, heart rate (3rd gen), barometer, always-on altimeter, compass, SpO2, VO2maxAccelerometer, gyro, heart rate (3rd gen), barometer, always-on altimeter, compass, SpO2, VO2max
Natural language commands and dictation (talking mode)
Ultra Wideband (UWB) support
Natural language commands and dictation (talking mode)
Ultra Wideband (UWB) support
Li-Ion, non-removableLi-Ion 303.8 mAh (1.17 Wh), non-removable
Wireless chargingWireless charging
Up to 18 h (mixed usage)Up to 18 h (mixed usage)
Silver, Graphite (DLC), Gold (PVD)

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