Samsung Galaxy Watch9 40mm

Overview

The Samsung Galaxy Watch9 40mm is a compact smartwatch featuring a 1.3-inch Super AMOLED display, a penta-core processor, 2GB RAM and 32GB storage. It runs on Wear OS powered by Samsung and combines fitness tracking, health monitoring, GPS navigation and smart features in a lightweight 40mm design.

The 40mm model is available in Cream and Graphite and comes with a 390mAh battery, Bluetooth 6.0, dual-band Wi-Fi, NFC and built-in GPS.

Key features

• 40mm case
• 1.3-inch Super AMOLED display
• 438 × 438-pixel resolution
• Penta-core processor
• Up to 2.1GHz CPU speed
• 2GB RAM
• 32GB storage
• Wear OS powered by Samsung
• Bluetooth 6.0
• Dual-band Wi-Fi
• Built-in GPS
• NFC
• 390mAh battery
• Up to 40 hours battery life with Always-On Display off
• Up to 30 hours with Always-On Display on
• 5 ATM water resistance
• Sleep Coaching
• Running Coach
• Heart Health Score
• Bioelectrical Impedance Analysis
• Optical Heart Rate Sensor
• Electrical Heart Sensor
• Temperature sensor
• Accelerometer and gyroscope
• Barometer
• Geomagnetic sensor
• Light sensor

1.3-inch Super AMOLED display

The Galaxy Watch9 40mm features a 1.3-inch Super AMOLED display with a 438 × 438-pixel resolution.

The compact display provides sharp text, clear menus and detailed watch faces while maintaining the smaller 40mm form factor.

Performance and storage

The smartwatch is powered by a penta-core processor with speeds of up to 2.1GHz.

It has 2GB of RAM and 32GB of internal storage, providing space for applications, supported music and other smartwatch content.

The watch runs Wear OS powered by Samsung, giving users access to compatible apps and smart features.

Health and fitness tracking

Galaxy Watch9 includes a comprehensive collection of sensors for monitoring activity and health-related measurements.

Its sensors include:

• Optical Heart Rate Sensor
• Electrical Heart Sensor
• Bioelectrical Impedance Analysis sensor
• Temperature sensor
• Accelerometer
• Gyroscope
• Barometer
• Geomagnetic sensor
• Light sensor

Samsung also includes features such as Sleep Coaching, Running Coach and Heart Health Score.

Sleep tracking

The Galaxy Watch9 can monitor sleep patterns and provide sleep-related insights. Sleep Coaching uses tracked sleep information to help users better understand their sleeping habits and routines.

GPS and connectivity

Built-in positioning supports GPS, GLONASS, Beidou, Galileo and QZSS.

For wireless connections, the watch supports:

• Bluetooth 6.0
• Wi-Fi 2.4GHz
• Wi-Fi 5GHz
• NFC

The 40mm model is available in Bluetooth and LTE versions, depending on the specific variant.

Battery

The Galaxy Watch9 40mm uses a 390mAh lithium-ion battery.

Samsung rates the battery for:

• Up to 40 hours with Always-On Display turned off
• Up to 30 hours with Always-On Display turned on

Actual battery life depends on usage, connectivity, display settings and health-tracking features.

Design and durability

The 40mm Galaxy Watch9 measures approximately 42.7 × 40.4 × 8.6mm and weighs 31.5g.

It has 5 ATM water resistance, making it suitable for everyday wear and compatible water activities within its specified rating.

The 40mm model is available in:

• Cream
• Graphite

Samsung Galaxy Watch9 40mm

Specifications

Specification	Galaxy Watch9 40mm
Case size	40mm
Display	1.3-inch Super AMOLED
Resolution	438 × 438 pixels
Processor	Penta-core
CPU speed	Up to 2.1GHz
RAM	2GB
Storage	32GB
Operating system	Wear OS powered by Samsung
Bluetooth	Bluetooth 6.0
Wi-Fi	2.4GHz + 5GHz
GPS	GPS, GLONASS, Beidou, Galileo, QZSS
NFC	Yes
Battery	390mAh
Battery life	Up to 40 hours AOD off / 30 hours AOD on
Water resistance	5 ATM
Dimensions	42.7 × 40.4 × 8.6mm
Weight	31.5g
Health sensors	BIA, electrical heart, optical heart rate, temperature
Other sensors	Accelerometer, gyroscope, barometer, geomagnetic, light
Colours	Cream, Graphite
Versions	Bluetooth / LTE

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