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The Apple Watch SE 3 (2025) 40mm is a lightweight (26.3g), swim-proof smartwatch built for smaller wrists. Featuring the powerful S10 chip, it introduces an Always-On OLED display, advanced sleep apnea notifications, and a durable crack-resistant Ion-X front glass.
Design & Display
- Dimensions: 40mm x 34mm x 10.7mm, crafted from 100% recycled aluminum.
- Screen: Always-On Retina display with LTPO technology, featuring a resolution of 394 x 324 pixels and up to 1000 nits of peak brightness.
- Durability: The Apple Watch SE 3 is rated for 50 meters of water resistance and boasts glass 4x more crack-resistant than its predecessors.
Performance & Internals
- Processor: Powered by the S10 64-bit dual-core processor and a 4-core Neural Engine, allowing for on-device Siri and responsive Smart Stack navigation.
- Storage: 64GB capacity for apps, podcasts, and offline music.
- Battery: All-day 18-hour battery life, with fast charging that reaches 80% charge in just 45 minutes.
Health & Safety Features
- Vital Tracking: Includes second-generation optical heart sensor, wrist temperature sensing for retrospective ovulation estimates, and the Vitals app for overnight health monitoring.
- Sleep & Cycle: Full sleep tracking with sleep stages, sleep scores, and sleep apnea notifications.
- Safety: Features High/Low heart rate alerts, Fall Detection, and Crash Detection.
- Connectivity: Available in both standard GPS and GPS + Cellular models, which supports Family Setup for users without iPhones (ideal for kids).
Controls & Navigation
- Gestures: The S10 chip enables intuitive one-handed controls like the double-tap gesture and wrist flick to dismiss notifications or answer calls.
The Apple Watch SE 3 (2025) 40mm is a lightweight (26.3g), swim-proof smartwatch built for smaller wrists. Featuring the powerful S10 chip, it introduces an Always-On OLED display, advanced sleep apnea notifications, and a durable crack-resistant Ion-X front glass.
Design & Display
- Dimensions: 40mm x 34mm x 10.7mm, crafted from 100% recycled aluminum.
- Screen: Always-On Retina display with LTPO technology, featuring a resolution of 394 x 324 pixels and up to 1000 nits of peak brightness.
- Durability: The Apple Watch SE 3 is rated for 50 meters of water resistance and boasts glass 4x more crack-resistant than its predecessors.
Performance & Internals
- Processor: Powered by the S10 64-bit dual-core processor and a 4-core Neural Engine, allowing for on-device Siri and responsive Smart Stack navigation.
- Storage: 64GB capacity for apps, podcasts, and offline music.
- Battery: All-day 18-hour battery life, with fast charging that reaches 80% charge in just 45 minutes.
Health & Safety Features
- Vital Tracking: Includes second-generation optical heart sensor, wrist temperature sensing for retrospective ovulation estimates, and the Vitals app for overnight health monitoring.
- Sleep & Cycle: Full sleep tracking with sleep stages, sleep scores, and sleep apnea notifications.
- Safety: Features High/Low heart rate alerts, Fall Detection, and Crash Detection.
- Connectivity: Available in both standard GPS and GPS + Cellular models, which supports Family Setup for users without iPhones (ideal for kids).
Controls & Navigation
- Gestures: The S10 chip enables intuitive one-handed controls like the double-tap gesture and wrist flick to dismiss notifications or answer calls.
Specifications
Brand
Apple
Compatibility
iPhone Xs with iOS 26 or newer
Model
Starter
Weight
26.4 g
Year of release
2025
Warranty
12 months
Connectivity
WiFi 802.11b/g/n, Bluetooth 5.3, NFC, 5G
Operating System
watchOS
Sensors
Accelerometer, Gyroscope, Light sensor, Barometer, Heart rate monitor (optical, electrical), Thermometer
Storage
64 GB
Band Size
S/M, M/L
Case Color
Starlight, Midnight
Case Material
Aluminum
Case Size
40 mm
Band Type
Sports Bracelet
Band Color
Starlight, Midnight
Band Material
Plastic
Dimension
34 x 40 x 10.7 mm
Display
OLED
Resolution
394 x 324
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