Apple watch se 3 — 44mm

Apple Watch SE 3 — Overview & Key Description The SE 3 is Apple’s refreshed entry-level smartwatch for 2025. It brings in several features that were previously reserved for the “premium” lines, while still aiming for a more accessible price point. The idea is to get many of the modern essentials (health, fitness, connectivity) in a lighter / simpler package. --- Key Features & Specs Here are its main features and specifications: Category Details Cases / Colors / Sizes Aluminum case. Available in two finishes: Midnight and Starlight.
Two sizes: 40 mm and 44 mm. Display Always-On Retina display using OLED LTPO.
Peak brightness: up to ~1,000 nits.
Covers “Ion-X” front glass with improved durability: 4× more crack-resistance vs previous generation. Processor / Storage Uses the S10 chip (64-bit dual-core, plus 4-core Neural Engine).
Storage: 64 GB. Sensors & Health / Wellness • Second-generation optical heart sensor (heart rate, high/low & irregular rhythm notifications).
• Temperature sensor (used for e.g. retrospective ovulation estimates etc.).
• Compass, always-on altimeter, high-g accelerometer, HDR gyroscope, ambient light sensor.
• Sleep app with sleep stages, Sleep Score, sleep apnea notifications.
• Cycle Tracking with retrospective ovulation estimate. Connectivity / Network • GPS only version + GPS + Cellular version.
• Supports 5G cellular on cellular models.
• WiFi (802.11n), Bluetooth 5.3. Controls & Gestures • Digital Crown with haptic feedback, Side button.
• New gestures: “double-tap” (thumb + index finger) and wrist-flick to dismiss alerts / snooze / answer calls etc. Audio / Speaker / Media • Speaker and microphone.
• For the first time (in SE line), support for playing media (music / podcasts) directly through the speaker. Battery Life & Charging • “All-day battery life” of up to 18 hours under normal usage.
• In Low Power Mode: up to ~32 hours.
• Fast-charging: 15 minutes charging gives ~8 hours of normal use. Up to ~80% in ~45 minutes.
• Also short charge (~8 min) gives ~8 hours of sleep tracking. Durability & Water Resistance Water resistance to 50 meters (suitable for swimming etc.). Other Safety / Features • Fall detection, Emergency SOS, Crash Detection etc.
• On-device Siri, with more local processing. --- Things Not Included / Limits Compared to Premium Models SE 3 does not have an ECG sensor. It does not have a blood-oxygen (SpO₂) sensor. The display is not as rugged or bright in every scenario as Ultra etc., though the improvements are significant. Some advanced health sensors in Series/Ultra models are missing.