Samsung Galaxy Watch9 40mm Bluetooth Smartwatch
The Galaxy Watch9 40mm Bluetooth tracks your sleep, heart and workouts with Samsung's latest health features. It has a 1.34-inch Super AMOLED display under sapphire crystal, a faster 3nm processor and a 390mAh battery, in a light 31.5g aluminium case that is comfortable to wear day and night.
Key Features
- Bright Sapphire Screen: The 1.34-inch Super AMOLED display reaches 3,000 nits and is covered by scratch-resistant sapphire crystal.
- Faster 3nm Chip: The Snapdragon W6100 makes apps, tiles and Gemini voice requests quicker and more efficient.
- Better Battery: The 390mAh battery lasts up to 30 hours with the always-on display enabled. It is 20% larger than the Watch8 40mm.
- Overnight Health Checks: Vitals tracking records heart rate, heart rate variability, breathing rate, skin temperature and blood oxygen while you sleep.
- Built for Workouts: 5ATM water resistance, IP68 and MIL-STD-810H testing mean it handles swims, runs and sweaty sessions.
- Newer Connectivity: Bluetooth 6.0 and Wi-Fi 6 give faster, more stable connections to your phone and network.
Please note: The Galaxy Watch9 is not compatible with iPhone. This Bluetooth model has no LTE, and fast charging is not supported (a full charge takes about 80 minutes).
A Lighter, Smarter Watch for Everyday Health
The Galaxy Watch9 40mm Bluetooth tracks your sleep, heart and workouts with Samsung's latest health features. It has a 1.34-inch Super AMOLED display under sapphire crystal, a faster 3nm processor and a 390mAh battery, in a light 31.5g aluminium case that is comfortable to wear day and night.
- 40mmAluminium case
- 1.34"Sapphire AMOLED
- 390mAhUp to 30 hrs, AOD on
- 5ATMPlus IP68
- 32GBStorage, 2GB RAM
Comfortable Enough to Wear All Day
Bright Sapphire Screen
The 1.34-inch Super AMOLED display reaches 3,000 nits and is covered by scratch-resistant sapphire crystal.
Faster 3nm Chip
The Snapdragon W6100 makes apps, tiles and Gemini voice requests quicker and more efficient.
Better Battery
The 390mAh battery lasts up to 30 hours with the always-on display enabled. It is 20% larger than the Watch8 40mm.
Overnight Health Checks
Vitals tracking records heart rate, heart rate variability, breathing rate, skin temperature and blood oxygen while you sleep.
Built for Workouts
5ATM water resistance, IP68 and MIL-STD-810H testing mean it handles swims, runs and sweaty sessions.
Newer Connectivity
Bluetooth 6.0 and Wi-Fi 6 give faster, more stable connections to your phone and network.
Will It Suit You?
Phone Compatibility
It pairs with Android phones only and does not work with iPhone. Some health features need a Samsung Galaxy phone.
40mm or 44mm?
The 40mm suits smaller wrists and is the lightest at 31.5g. The 44mm has a larger 1.47-inch screen and a bigger 445mAh battery.
Bluetooth Model
This is the Bluetooth model. Calls and messages come through your phone, so keep it nearby.
Frequently Asked Questions
Does the Galaxy Watch9 work with iPhone?
No. It works with Android phones only.
How long does the battery last?
Up to 30 hours with the always-on display enabled, from a 390mAh battery.
Can I swim with it?
Yes. It is rated 5ATM and IP68, so it suits swimming in a pool or shallow water, but not diving or high-speed water sports.
Can I make calls from the watch?
Yes, through your paired phone over Bluetooth. This model has no LTE, so the phone must be nearby.
What size is it?
The case is 40mm with a 1.34-inch display and weighs 31.5g.
Specifications
| Model | SM-L340N (Cream, Graphite) |
|---|---|
| Case | 40mm aluminium |
| Display | 1.34-inch Super AMOLED (438 x 438), sapphire crystal, up to 3,000 nits |
| Processor | Snapdragon W6100 (3nm) |
| Memory and storage | 2GB RAM, 32GB storage |
| Battery | 390mAh (typical) |
| Connectivity | Bluetooth 6.0, Wi-Fi 6, NFC, GPS |
| Durability | 5ATM, IP68, MIL-STD-810H |
| Operating system | Wear OS 7 with One UI 9 Watch |
| Compatibility | Android phones only |
| Dimensions | 42.7 x 40.4 x 8.6mm |
| Weight | 31.5g (without band) |
What’s in the Box
- Samsung Galaxy Watch9 40mm
- Band
- Wireless charger
- Quick start guide
Specifications are supplied by Samsung and may change without notice. Images are for illustration only. Battery and performance figures are typical values under test conditions; real-world results vary with settings and use.
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