Detailed Technical Specifications

Product Information

• Product Name: Apple Watch SE (2nd Generation)
• Model: GPS + Cellular, 44mm
• Brand: Apple
• Series: SE Series (Essential features at a better value)
• Category: Smartwatch
• Case Material: 100% recycled aluminum
• Color Options: Midnight, Starlight, Silver
• Release Date: September 2022

Display

• Screen Size: 1.78 inches (44mm) diagonal
• Display Type: Retina LTPO OLED
• Resolution: 368 × 448 pixels
• Brightness: Up to 1000 nits
• Always-On Display: No (requires Apple Watch Series 5 or later)
• Screen Protection: Ion-X strengthened glass
• Features: Force Touch, 3D Touch

Processor & Memory

• Chipset: Apple S8 SiP (System in Package)
• Processor: Dual-core 64-bit
• Storage: 32GB
• Wireless: W3 Apple wireless chip
• U1 Chip: Ultra Wideband chip for spatial awareness

Sensors

• Electrical heart sensor: For ECG app
• Optical heart sensor: For heart rate monitoring
• Blood oxygen sensor: For SpO2 measurements
• Accelerometer: Up to 32 g‑forces with fall detection
• Gyroscope: High dynamic range
• Always-on altimeter: Barometric altimeter
• Ambient light sensor: For automatic brightness adjustment
• Compass: With waypoints and backtrack

Health & Fitness Features

• Heart Rate Monitoring: High and low heart rate notifications, irregular rhythm notifications
• ECG App: Generates ECG similar to a single-lead electrocardiogram
• Blood Oxygen: On-demand and background measurements
• Sleep Tracking: Sleep stages (Core, Deep, REM) and sleep schedule
• Cycle Tracking: Menstrual cycle tracking with predictions
• Temperature Sensing: Wrist temperature sensing for sleep tracking
• Workout Types: Over 20 workout types including swimming, yoga, and high-intensity interval training
• Fitness+: Integration with Apple Fitness+ subscription service
• Activity Rings: Move, Exercise, Stand rings with sharing and competitions
• Medications: Medications app to manage and track medications

Connectivity

• Cellular: LTE and UMTS support (with cellular model)
• Wi-Fi: 802.11b/g/n 2.4GHz and 5GHz
• Bluetooth: 5.3
• GPS/GNSS: Built-in GPS, GLONASS, Galileo, QZSS, and BeiDou
• NFC: For Apple Pay
• Emergency SOS: International emergency calling
• Compatibility: iPhone 8 or later with iOS 16 or later

Smart Features

• Siri: Voice assistant with on-device processing
• Phone Calls: Make and receive calls directly from watch (with cellular model)
• Messages: Send and receive messages, Digital Touch, and animated emoji
• Apple Pay: Contactless payments
• Wallet: Store boarding passes, tickets, and keys (Home, Car, Hotel)
• Maps: Turn-by-turn navigation with haptic feedback
• Music & Podcasts: Stream and download for offline playback
• Audible: Listen to audiobooks
• Family Setup: Set up watches for family members without an iPhone
• Find My: Locate people, devices, and items
• Walkie-Talkie: Live voice communication with other Apple Watch users
• Noise Monitoring: Alerts when ambient sound levels are too high
• Emergency Features: Fall Detection, Crash Detection, Emergency SOS

Battery

• Battery Type: Built-in rechargeable lithium-ion
• Battery Life: Up to 18 hours (all-day battery life)
• Charging: Magnetic Fast Charger (USB-C cable included)
• Charging Time: 0 to 80% in about 45 minutes
• Power Reserve: Low Power Mode extends battery life

Water Resistance

• Rating: Water resistant 50 meters under ISO standard 22810:2010
• Swimproof: Suitable for swimming in a pool or ocean
• Water Lock: Ejects water from speaker after swimming
• Not Suitable For: Scuba diving, water skiing, or other activities involving high-velocity water

Physical Specifications

• Dimensions: 44mm height × 38mm width × 10.7mm depth
• Weight: 33.0 grams (aluminum case with sport band)
• Case Material: 100% recycled aluminum
• Back Material: Ceramic and sapphire crystal (with heart rate sensors)
• Strap Compatibility: All Apple Watch bands (44mm, 45mm, 49mm)
• Digital Crown: With haptic feedback
• Side Button: For contacts and power

Operating System

• watchOS: watchOS 9 (upgradable to latest version)
• Features: New watch faces, enhanced workout metrics, improved sleep tracking, medications app

Audio & Haptics

• Speaker: Built-in speaker for calls, Siri, and audio playback
• Microphone: Built-in microphone for calls and Siri
• Haptic Feedback: Taptic Engine for subtle vibrations

Environmental Requirements

• Operating Temperature: 32° to 95° F (0° to 35° C)
• Storage Temperature: -4° to 113° F (-20° to 45° C)
• Relative Humidity: 5% to 95% noncondensing
• Maximum Operating Altitude: Tested up to 10,000 feet (3000 m)

In the Box

• Apple Watch SE (GPS + Cellular, 44mm)
• Sport Band (size: S/M and M/L) or Solo Loop
• 1m Magnetic Fast Charger to USB-C Cable
• Documentation

Warranty & Support

• Limited Warranty: 1 year
• AppleCare+: Optional extended warranty and support
• Complimentary Support: 90 days of complimentary technical support

Certifications

• IP6X dust resistance
• 50m water resistance (ISO 22810:2010)
• CE, FCC, ICES, MIC, RCM, UKCA
• ECG app clearance in various regions

Important Notes

• Cellular service requires a carrier plan and iPhone setup
• Some features require iPhone and/or internet connection
• ECG app not intended for users under 22 years old
• Blood oxygen measurements not for medical use
• Battery life varies by use, configuration, and other factors
• Ceramic and sapphire crystal back only on aluminum and stainless steel models
• Always-on altimeter requires watchOS 7.2 or later