OnePlus Watch 3 vs Galaxy Watch8
Verified 2026-10-31
A factual specification comparison between the OnePlus Watch 3 and the Galaxy Watch8.
Image: OnePlus Technology
OnePlus · SmartwatchOnePlus Watch 3
- Status
- Released
- Verification
- Verified
- Last checked
- Checked 2026-10-02
Samsung · SmartwatchGalaxy Watch8
- Status
- Released · 2025-07-25
- Announced
- Announced 2025-07-09
- Verification
- Verified
- Last checked
- Checked 2026-10-01
Key differences
SpecificationOnePlus Watch 3Galaxy Watch8
Design & Build
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Water resistance (differs) | IP68, 5ATM; MIL-STD-810H tested | 5 ATM |
| Colors (differs) | Emerald Titanium | Graphite, Silver |
Display
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Display (differs) | 1.50-inch LTPO AMOLED, up to 2200 nits peak brightness | Super AMOLED |
| Peak brightness (nits) (differs) | 2200 | 3000 |
Performance
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Chipset model name (differs) | Snapdragon W5 | Exynos W1000 |
| Chipset (differs) | Qualcomm Snapdragon W5, BES2800BP MCU | Penta-core processor (1.6GHz + 1.5GHz) |
Battery & Charging
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Battery life (differs) | Power saver mode: up to 16 days; Smart mode: up to 5 days; Heavy use in smart mode: up to 3 days | Up to 30 hours with Always On Display enabled |
Connectivity
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Wi-Fi (differs) | Wi-Fi 5GHz/2.4GHz | Wi-Fi 802.11 a/b/g/n, dual-band |
Software
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Operating system at launch (differs) | Wear OS by Google + RTOS (dual-system architecture) | Wear OS 6, One UI 8 Watch |
Security & Sensors
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Health sensors (differs) | Wrist temperature sensor, Optical heart rate sensor, Optical pulse oximeter sensor, Geomagnetic sensor, Light sensor, Barometer, Acceleration sensor, Gyroscope sensor | Heart rate, Barometer/altimeter, SpO2, Skin temperature, BioActive sensor (antioxidant index) |
These are specifications where both devices have a confirmed value and the values differ. A difference is not a judgement that either device is better. Showing 10 of 16 differences; the full specifications below include all of them.
Full specifications
differs · Not disclosed: not published by the manufacturer · —: not recorded
SpecificationOnePlus Watch 3Galaxy Watch8
Design & Build
4 differences
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Water resistance (differs) | IP68, 5ATM; MIL-STD-810H tested | 5 ATM |
| Colors (differs) | Emerald Titanium | Graphite, Silver |
| Weight (differs) | Excluding wrist strap: 49.7 g, Including wrist strap: 81 g | 44mm: 34.0 g |
| Case dimensions (differs) | 46.6mm (excluding lugs) × 47.6mm × 11.75mm (excluding sensor area) | 44mm: 46.0 × 43.7 × 8.6 mm |
| Build materials | Titanium bezel (Black or Silver), stainless steel case, sapphire crystal cover glass | Not recorded |
Display
3 differences
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Display (differs) | 1.50-inch LTPO AMOLED, up to 2200 nits peak brightness | Super AMOLED |
| Peak brightness (nits) (differs) | 2200 | 3000 |
| Resolution (differs) | 466×466 pixels | 44mm: 480×480 pixels |
Performance
2 differences
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Chipset model name (differs) | Snapdragon W5 | Exynos W1000 |
| Chipset (differs) | Qualcomm Snapdragon W5, BES2800BP MCU | Penta-core processor (1.6GHz + 1.5GHz) |
Memory & Storage
No differences
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Storage (GB) | 32 · same on both | |
Battery & Charging
1 difference
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Charging time | Not recorded | 10W wireless charging |
| Battery capacity (mAh) | Not recorded | 435 |
| Battery life (differs) | Power saver mode: up to 16 days; Smart mode: up to 5 days; Heavy use in smart mode: up to 3 days | Up to 30 hours with Always On Display enabled |
Connectivity
4 differences
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Wi-Fi (differs) | Wi-Fi 5GHz/2.4GHz | Wi-Fi 802.11 a/b/g/n, dual-band |
| Bluetooth (differs) | Bluetooth 5.2, Bluetooth calling | Bluetooth 5.3 |
| Contactless payments (differs) | NFC supported, Google Wallet | Samsung Wallet (NFC) |
| Cellular connectivity | Not recorded | Available in LTE and Bluetooth models |
| Positioning (differs) | Dual-band L1+L5 GPS, GLONASS, Galileo, BeiDou, QZSS | Dual-band GPS (L1 and L5) |
Software
1 difference
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Operating system at launch (differs) | Wear OS by Google + RTOS (dual-system architecture) | Wear OS 6, One UI 8 Watch |
| Phone compatibility | Not recorded | Requires a Samsung Galaxy smartphone running Android 12 or higher |
Security & Sensors
1 difference
| Specification | OnePlus Watch 3 | Galaxy Watch8 |
|---|---|---|
| Health sensors (differs) | Wrist temperature sensor, Optical heart rate sensor, Optical pulse oximeter sensor, Geomagnetic sensor, Light sensor, Barometer, Acceleration sensor, Gyroscope sensor | Heart rate, Barometer/altimeter, SpO2, Skin temperature, BioActive sensor (antioxidant index) |
Terms used on this page (5)
- Nits
- A unit of screen brightness (candela per square metre). Typical, HDR and outdoor peak figures are measured under different conditions.
- IP rating
- Ingress protection under IEC 60529: the first digit rates dust protection, the second water protection, each under the manufacturer's stated test conditions.
- mAh and Wh
- Battery capacity. mAh is charge; Wh also accounts for voltage, so it is the more comparable energy figure across device types.
- LTPO
- A display backplane technology that lets the refresh rate vary, down to low rates to save power.
- MIL-STD-810H
- A US military test standard. Manufacturers choose which of its tests to run, so it does not imply a specific level of durability.
Sources & verification
OnePlus Watch 3
Verified 2026-10-02- OnePlus TechnologyManufacturerTier 1
- OnePlus Technology Co., Ltd.Manufacturer specificationsTier 1
- OnePlus Technology Co., Ltd.Manufacturer specificationsTier 1
Galaxy Watch8
Verified 2026-10-01- Samsung ElectronicsManufacturerTier 1
- Samsung ElectronicsManufacturerTier 1
- Samsung Newsroom — Galaxy Watch8 series unveilingManufacturer newsroomTier 1
- GSMArena — Samsung Galaxy Watch8Independent technical sourceTier 2
Tier 1 sources are the manufacturer's own product pages, technical specification sheets, or support documentation. Tier 2 sources are reputable independent technical references, used only for facts that couldn't be confirmed from official documentation, as is the case for some facts here.