Apple Watch Ultra 4 GPS + Cellular 49mm Black Titanium Case with Translucent Ocean Band - MJAY4L

Design & Display

• Case: 49mm aerospace-grade titanium, Black finish (weight ~63.1g)

• Display: Always-On Retina LTPO3 OLED, 422×514 pixels, peak brightness 3,000 nits, flat sapphire crystal

• Band: Translucent Black Ocean Band, high-performance silicone elastomer, fits 130–210mm wrists

Durability & Water Resistance

• Water Resistance: 100m (WR100), IP6X dust resistance

• Diving: EN13319 certified for recreational scuba diving up to 40m, built-in depth gauge

• Activities: Swimming, snorkeling, scuba, high-speed water sports

Performance & Battery

• Chip: S11 64-bit dual-core processor, 4-core Neural Engine, 64GB storage

• Battery: Up to 50 hours normal use, 84 hours in Low Power Mode

• Workout: Up to 45 hours Max Extended Workout tracking

• Fast Charging: 15 minutes = up to 18 hours use; 0–80% in ~45 minutes

Health & Fitness

• Heart Rate: Most accurate heart rate sensing in a wearable (3rd-gen optical + electrical sensors), background HR every 5 seconds, HRV up to every 5 minutes

• New Features: Readiness Score, Vitals app, Sleep Score, Sleep Apnea notifications

• Health Monitoring: ECG, Blood Oxygen, Wrist Temperature, Cycle Tracking (with perimenopause/menopause support)

• Workouts: Precision dual-frequency GPS (L1+L5), Training Load, Heart Rate Zones, Pacer, Custom Workouts, Automatic Track Detection

Connectivity & Safety

• Network: GPS + Cellular (5G), eSIM, Wi-Fi 4, Bluetooth 5.3, Second-gen Ultra Wideband

• Satellite: Emergency SOS, Messages, Find My via satellite (free for 2 years)

• Safety: Fall Detection, Crash Detection, Siren, International Emergency Calling

• Audio Intelligence: Live Rewind, Siri Recap (on-device processing)