Apple Watch 9 vs Apple Watch SE

Apple Watch 9 was released in September 2023 and Apple Watch SE was last released in September 2022.

We compare the Apple Watch 9 and Apple Watch SE 2 or 2022 models below.

  • Apple Watch 9 supports Always-on-display mode. Apple Watch SE uses a retina display but does not support the Always-on-display mode.
  • Apple Watch 9 supports ECG mode. Apple Watch SE does not support the ECG feature.
  • Apple Watch 9 uses the latest dual-core S9 processor. Apple Watch SE uses a dual-core S8 processor. Apple Watch 9, therefore, uses a faster processor.
  • Apple Watch 9 can track blood oxygen saturation levels through the oxygenation app. Apple Watch SE cannot track blood oxygen saturation levels.
  • Apple Watch 9 offers a bezel of stainless steel or recycled aluminum body. Apple Watch SE uses recycled aluminum.
  • Apple Watch 9 comes in 45 mm and 41 mm sizes. Apple Watch SE is offered in 40 mm and 44 mm sizes.
  • Apple Watch 9 has more color options than the Apple Watch SE.
  • Apple Watch 9 is costlier than the Apple Watch SE.

We look at the significant differences in detail below.

Apple Watch 9 and Apple Watch SE support retina display technology. But, the Apple Watch 9 has a peak screen brightness of 2000 nits. Apple Watch SE has a peak screen brightness of 1000 nits only.

Apple Watch 9 is compatible with the Always on Display (AOD) mode. Apple Watch SE does not support the Always on display (AOD) mode.

Apple Watch 9

Apple Watch 9 is bigger than the Apple Watch SE. The dimensions of both watches are shared below.

Physical specificationsApple Watch 9Apple Watch SE
Size45 mm x 38 mm x 10.7 mm
41 mm x 35 mm x 10.7 mm
44 mm x 38 mm x 10.7 mm
41 mm x 34 mm x 10.7 mm
Thickness 10.7 mm10.7 mm
Display resolution45 mm – 396 x 484 pixels
41 mm – 352 x 430 pixels
44 mm – 368 x 448 pixels
40 mm – 324 x 394 pixels
Weightbetween 51.5 – 31.9 gramsbetween 33 – 26.4 grams

Apple Watch 9 is compatible with the ECG app. The ECG app is available on Apple Watch Series 4 and later (excluding Apple Watch SE), and can generate an ECG similar to a single-lead electrocardiogram. It is intended for use by people 22 years old andĀ over.

Apple ECG app is notified for use in specific countries. For a list of supporting countries, you may check this page to find the list of countries in which Apple ECG app is approved.

Apple Watch 9 uses a dual-core S9 chip and Apple Watch SE uses a dual-core S8 chip. Both are 64-bit processors.

The S9 chip is better than the S8 chip because of the following reasons:

  • S9 chip is compatible with the double tap feature of the Apple Watch 9.
  • S9 chip is more power efficient.
  • S9 chip features a 60 percent higher number of transistors (5.6 billion) than the S8 chip.
  • The GPU or graphics processing of the S9 chip is up to 30 percent faster than the S8 chip.
  • The neural engine in an S9 chip is twice as fast as the S8 chip. The S9 chip uses a 4-core neural engine.

You may find some noticeable differences in graphics rendering between an Apple Watch 9 and Apple Watch SE.

Apple Watch 9 can track blood oxygen saturation levels through the oxygenation sensor. Apple Watch SE lacks a sensor for tracking blood oxygen saturation levels.

  • Apple Watch 9 GPS + Cellular Aluminium variants are available in midnight, starlight, silver, pink and red.
  • Apple Watch 9 GPS + Cellular in Stainless steel is available in graphite (PVD), silver, and gold (PVD).

Apple Watch SE GPS + Cellular and GPS variants are offered in midnight, starlight, and silver.

Apple Watch SE costs between $249 to $299. Apple Watch 9 costs between $399 to $499.

Apple Watch 9 is a newer variant. For the additional money spent on Apple Watch 9, it offers the following benefits over the Apple Watch SE:

  • Faster processor
  • Always-on-display mode
  • ECG app
  • Blood oxygen saturation tracking

In our opinion, Apple Watch 9 ticks all the boxes for a modern smartwatch. The most significant feature addition is the Apple ECG app in Apple Watch 9 smartwatches.

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