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Midnight aluminum 45mm case with midnight textile sport loop

Apple

Apple Watch Series 9 64GB Cellular + GPS 45mm Midnight Aluminum Sport Loop

SKU CH-M1T8-YRS31

A 45 mm cellular smart watch with GPS, 64 GB storage and up to 18 hours battery life

  • ColorMidnight-Aluminum-Sport Loop-Midnight
  • ConnectivityCellular + GPS
  • Cellular and GPS keep you connected without your phone
  • 45 mm Midnight aluminum case with Midnight Sport Loop fits securely
  • S9 SiP dual-core processor powers fast on-device Siri and new Double Tap gesture
  • Always-On Retina LTPO OLED reaches 2 000 nits for clear outdoor visibility
  • Up to 18 hours battery life extends to 36 hours in Low Power Mode

Apple Watch Series 9 45mm Cellular GPS

The Apple Watch Series 9 combines a 45mm aluminum case with 64GB storage and Cellular plus GPS connectivity. It runs the S9 SiP dual-core processor and an Always-On Retina LTPO OLED display reaching 2,000 nits brightness. Health sensors include ECG, blood oxygen, heart rate and wrist temperature monitoring. Safety features cover fall detection, crash detection and Emergency SOS. Battery life reaches up to 18 hours, or 36 hours in Low Power Mode.

Compatibility and setup check

Verify that your iPhone model and iOS version support watchOS for Series 9 before ordering. Cellular service requires a compatible carrier plan that supports Apple Watch eSIM activation. The 45mm case measures 45 x 38 x 10.7 mm and weighs 39 grams; confirm the size suits your wrist. The included Midnight Sport Loop is a One Size textile band designed for the 45mm case.

Build quality and daily wear

The aluminum case uses a glass front with a ceramic and sapphire crystal back for durability. IP6X certification provides dust resistance for everyday exposure. The Sport Loop attaches with hook-and-loop fastener for quick adjustment during activity. Double Tap gesture enables one-handed control without touching the screen. On-device Siri processing speeds voice interactions. Family Setup support lets cellular models work for family members without their own iPhone.

Highlights

  • Cellular and GPS keep you connected without your phone
  • 45 mm Midnight aluminum case with Midnight Sport Loop fits securely
  • S9 SiP dual-core processor powers fast on-device Siri and new Double Tap gesture
  • Always-On Retina LTPO OLED reaches 2 000 nits for clear outdoor visibility
  • Up to 18 hours battery life extends to 36 hours in Low Power Mode

Specifications

ColorMidnight-Aluminum-Sport Loop-Midnight
ConnectivityCellular + GPS

Questions about this item

What comes in the box with the 45mm Midnight aluminum model and Sport Loop, and what must I buy separately?

The box includes the 45mm aluminum case with Midnight Sport Loop, a USB-C magnetic charging cable, and documentation. A USB-C power adapter is not included and must be purchased separately.

How do I choose between the 41mm and 45mm case sizes for the Series 9?

The 45mm case measures 45 x 38 x 10.7 mm and weighs 39 g (1.38 oz); the 41mm case measures 41 x 35 x 10.7 mm and weighs 32.1 g (1.13 oz). Pick the size that fits your wrist and preferred screen area.

What does the 18-hour battery claim mean for daily use with the Always-On display and cellular active?

Apple rates the Series 9 for up to 18 hours of mixed use and up to 36 hours in Low Power Mode. Real-world runtime varies with Always-On display brightness, cellular signal strength, workout tracking, and background app refresh.

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