| Case Size | 40mm / 44mm aluminium (midnight, starlight) | — |
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| Display | Always-On display; cover glass 4x more resistant to cracks than previous generation (Ion-X) | 1.2-inch AMOLED touchscreen with tapered edge and automatic brightness (COROS cites 164% higher resolution than PACE 3) |
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| Chipset | Apple S10 | — |
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| Battery | Up to 18 hours; 15 minutes of fast charging adds up to 8 hours, about 80% in 45 minutes | Up to 19 days of daily use; up to 41 hours of GPS in All Systems (High) GPS mode |
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| Health Sensors | Heart rate, wrist temperature sensing, sleep score, sleep apnea notifications, retrospective ovulation estimates | — |
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| Connectivity | 5G cellular models | — |
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| OS | watchOS 26 (requires iPhone 11 or later with iOS 26) | — |
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| Body | — | 11.8 mm thick; 32 g with nylon band, 40 g with silicone band; Standard White version with fiber-reinforced polymer bezel; Black Crystal and Cloud White versions with aluminum alloy bezel |
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| Positioning | — | All-Systems and Dual-Frequency satellite modes |
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| Sensors | — | Redesigned optical heart rate sensor with larger LEDs, built-in microphone |
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| Controls | — | Touchscreen, two buttons and a tactile digital dial, plus an Action Button for data screens, media controls, breadcrumb navigation and Voice Pins |
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| Charging | — | USB-C charging adapter (cable not included) |
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| Bands | — | Interchangeable silicone or nylon bands |
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| Sports | — | Running fitness scores and tests, race predictions, personalized marathon plans, Virtual Pacer, Effort Pace, real-time activity alerts |
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| Health | — | HRV, sleep, recovery time and menstrual cycle tracking |
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| Media | — | On-watch media controls for skipping tracks or podcasts and adjusting volume |
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