Apple Watch Ultra 3 vs Apple Watch Series 6 (44mm) Specs Comparison
Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.
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| Apple Watch Ultra 3 | Apple Watch Series 6 (44mm) |
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Released
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Sep 19, 2025
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Released
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Sep 18, 2020
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1.9-inch · 502x410px
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1.8-inch · 448x368px
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1GB · 64GB
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1GB · 32GB
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| Check prices |
Availability
| Officially announced | |
|---|---|
| Sep 09, 2025 | Sep 15, 2020 |
| Prices (MSRP) | |
| $799 | $529 |
Design
| Dimensions | |
|---|---|
| 1.93 x 1.73 x 0.47 inches 49 x 44 x 12 mm |
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| Weight | |
| 2.17 oz / 61.6 g | |
| Wrist size | |
| Case fits 140-220 mm wrists | |
| Materials | |
| Back: Ceramic Frame: Titanium |
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| Materials & Colors | |
| Aluminum: Silver, Space gray, Gold, Blue, Red Stainless steel: Silver, Graphite, Gold Titanium: Titanium, Space black |
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| Resistance | |
| Water, Dust; IP6X; MIL-STD-810 certified | Water (up to 50 meters) |
| Colors | |
| Natural, Black | |
Display
| Size | |
|---|---|
| 1.9-inch | 1.8-inch, 59.89% screen-to-body |
| Type | |
| OLED, 3000 nits | OLED, 1000 nits |
| Resolution | |
| 502x410px, 338 PPI | 448x368px, 326 PPI |
| Protection | |
| Sapphire | Sapphire |
| Features | |
| Pressure-sensitive, Scratch-resistant glass, Ambient light sensor | |
Hardware
| System chip | |
|---|---|
| Apple S10 | Apple S6 |
| Processor | |
| Dual-core | Dual-core |
| GPU | |
| PowerVR | PowerVR |
| Memory | |
| 1GB/64GB | 1GB/32GB |
| Storage expansion | |
| not expandable | not expandable |
| OS | |
| watchOS (10.x) | watchOS (9.x, 8.x, 7.x, 6.x) |
| Compatible devices | |
| Apple iPhone 6s or later with iOS 13 or later | |
Battery
| Type | |
|---|---|
| Li - Ion | Li - Ion |
| Charging | |
| Qi wireless charging | Magnetic charging |
Connectivity & Features
| Bluetooth | |
|---|---|
| 5.3 | 5.0 |
| WLAN | |
| a,b,g,n,ac 802.11 b, g, n | b,g,n 802.11 b, g, n |
| Sensors | |
| Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Thermometer, Barometer, ECG, Blood Oxygen | Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Barometer, ECG, Blood Oxygen, Ambient light sensor |
| Location | |
| A-GPS, Glonass, Galileo, BeiDou, QZSS | GPS, Glonass |
| Other | |
| NFC, Ultra Wideband (UWB) | NFC |
Multimedia
| Speakers | |
|---|---|
| Multiple speakers | Loudspeaker |
Cellular
| 4G (FDD) Bands | |
|---|---|
| 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 25, 26, 66 | 1, 2, 3, 4, 5, 7, 12, 13, 17, 18, 19, 25, 26, 66 |
| 4G (TDD) Bands | |
| 39, 40, 41 | 39, 40, 41 |
| 3G Bands | |
| 1, 2, 4, 5 | 1, 2, 4, 5, 8 |
| Data Speed | |
| LTE-A, HSDPA+ (4G) 42.2 Mbit/s | LTE, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s |
| SIM type | |
| eSIM | eSIM |
Alternative variants
non-LTE version
| Materials & Colors | Aluminum: Silver, Space gray, Gold, Blue, Red |
|---|---|
| Prices (MSRP) | $429 |
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