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Apple Watch Ultra 4 is built for the outdoors, with a 49mm titanium case, a customisable Action button, a siren, dual-frequency GPS, 100 metres of water resistance and multi-day battery life. It has built-in cellular so it works without your iPhone.
Compatible with: iPhone (latest iOS)
| Case | Grade 5 titanium in Natural or Black, 49mm (422 x 514 pixels) |
|---|---|
| Display | Always-On Retina LTPO3 OLED, up to 3,000 nits, flat sapphire crystal |
| Chip | S11 with 64-bit dual-core processor and 4-core Neural Engine; 64GB storage |
| Health sensing | Electrical heart sensor (ECG), optical heart sensor, blood oxygen and temperature sensors; sleep apnoea and hypertension notifications |
| Outdoors | Customisable Action button, siren, depth gauge, water temperature sensor, always-on altimeter, compass |
| Battery life | Up to 50 hours normal use, up to 84 hours in Low Power Mode; 80% charge in about 45 minutes |
| Water and dust | Water resistant to 100 metres, EN13319 scuba diving to 40 metres, IP6X dust resistant, MIL-STD 810H tested |
| Connectivity | GPS + Cellular (RedCap 5G and LTE), precision dual-frequency GPS, Bluetooth 5.3, Wi-Fi 4, second-generation Ultra Wideband |
| Wrist size | Fits 130-210mm wrists |
| Compatibility | Requires an iPhone with the latest iOS |
| Type | Retina LTPO3 OLED, 3000 nits (peak) |
|---|---|
| Size | 1.98 inches |
| Resolution | 514 x 422 pixels (~326 ppi density) |
| Protection | Sapphire crystal; Wide-angle OLED |
| OS | watchOS 27 |
|---|---|
| Chipset | Apple S11 |
| CPU | Dual-core |
| GPU | PowerVR |
| Storage and RAM | 64GB |
|---|---|
| Memory card | None |
| Speaker | Yes, with dual speakers (86-decibel) |
|---|
| Wi-Fi | Wi-Fi 802.11 b/g/n, dual-band |
|---|---|
| Bluetooth | 5.3, A2DP, LE |
| Positioning | GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS |
| NFC | Yes |
| Sensors | Accelerometer, gyro, always-on heart rate, barometer, always-on altimeter (-500m to 9000m), compass, SpO2, VO2max, temperature (body), temperature (water) |
|---|---|
| Other | Health Sensing System: third‑generation electrical heart sensor, always‑on optical heart sensor, blood oxygen sensor, temperature sensor; Temperature sensing (0.01˚ accuracy); Depth gauge (±1m accuracy); Ultra Wideband (UWB) support (gen2 chip); Emergency SOS via satellite |
| Charging | Wireless, 0-80% in 45 min |
|---|
| Dimensions | 49 x 44 x 12 mm (1.93 x 1.73 x 0.47 in) |
|---|---|
| Weight | 63 g (2.22 oz) |
| Build | Sapphire crystal front, ceramic and zirconia back, titanium frame (grade 5) |
| SIM | eSIM |
| Water resistance | IP6X certified; 100m water resistant (22810:2010); 40m swimproof/diving (EN13319); MIL-STD-810H compliant; ECG certified (region dependent SW application; HW available on all models) |
| Technology | GSM / HSPA / LTE / 5G |
|---|---|
| Speed | HSPA, LTE, 5G |
| Announced | 2026, September 09 |
|---|---|
| Status | Available. Released 2026, September 18 |
Natural, Black
Delivery in 11-15 business days, free over £100.00 to the UK, otherwise £39.99. Delivered within the United Kingdom.
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The Apple Watch Ultra 4 has a 1.98-inch Retina LTPO3 OLED display at 514 x 422 pixels. Peak brightness is 3000 nits, so it stays readable in sunlight. The screen is covered by sapphire crystal.
Apple lists battery life as: Up to 50 hours normal use, up to 84 hours in Low Power Mode; 80% charge in about 45 minutes. Charging: Wireless, 0-80% in 45 min.
It is water resistant, with these ratings listed: IP6X certified; 100m water resistant (22810:2010); 40m swimproof/diving (EN13319). That suits swimming in a pool and sweaty workouts. Avoid high-pressure water, such as water-skiing, and keep it away from soaps and perfumes.
It carries these sensors: Accelerometer, gyro, always-on heart rate, barometer, always-on altimeter (-500m to 9000m), compass, SpO2, VO2max, temperature (body), temperature (water).
Yes. Apple Watch is set up and managed from an iPhone, and the models are designed to work with the latest version of iOS. It cannot be paired with an Android phone.
It has Bluetooth 5.3, Wi-Fi, GPS (L1+L5) positioning and NFC for contactless payments. Cellular versions use an eSIM, so you can make calls and use data without your phone nearby, if your network supports it.
Yes. It is new and sealed, and it carries a 12-month NexCell warranty, which we handle directly. The Warranty page explains what is covered and how to claim.
