Apple Watch Ultra 4

Network

• Technology: GSM / HSPA / LTE

• Connectivity: Bluetooth, Wi-Fi, cellular

• Satellite communication: Yes

Launch

• Announced: September 9, 2026

• Status: Available

• Release date: September 18, 2026

Body

• Dimensions: Not specified here

• Weight: Not specified here

• Build: Titanium case

• Front: Sapphire crystal

• Water resistance: 100 m

• Diving: Recreational scuba diving up to 40 m

• Dust resistance: IP6X

• Case sizes: 49 mm

Display

• Type: Always-On Retina LTPO OLED

• Size: 1.98 inches

• Resolution: 502 × 410 pixels

• Brightness: Up to 3,000 nits

• Protection: Sapphire crystal

• Features: Always-On display, Night Mode

Platform

• OS: watchOS 27

• Chipset: Apple S11

• Processor: Dual-core

• Wireless chip: Apple N1

• Features: Siri AI, Apple Intelligence integration

Memory

• Card slot: No

• Internal storage: 64GB

• RAM: Not officially specified

Sound

• Loudspeaker: Yes

• Microphone: Yes

• Siren: Yes, up to 86 dB

Communications

• WLAN: Wi-Fi

• Bluetooth: Yes

• Positioning: GPS, GLONASS, Galileo, BeiDou, QZSS

• NFC: Yes

• Cellular: LTE and UMTS

• Satellite: Emergency SOS, Find My and Messages via satellite where supported

Features

• Sensors: Optical heart sensor, electrical heart sensor, blood oxygen sensor, temperature sensor, compass, always-on altimeter, accelerometer, gyroscope

• Health: ECG, heart-rate monitoring, sleep tracking, sleep apnea notifications where supported

• Fitness: Activity tracking, readiness score, training-load monitoring

• Safety: Fall Detection, Crash Detection, Emergency SOS

• Diving: Depth gauge and water-temperature sensor

Battery

• Type: Built-in rechargeable lithium-ion

• Typical use: Up to 50 hours

• Low Power Mode: Up to 84 hours

• Extended workout tracking: Up to 25 hours with GPS and heart rate

• Maximum extended workout: Up to 45 hours

• Fast charging: Yes