Amazfit Cheetah 2 Ultra vs Oura Ring 4: Which Should You Buy?

Overview

The Amazfit Cheetah 2 Ultra and the Oura Ring 4 are built for entirely different buyers. The Cheetah 2 Ultra is a £599.90 GPS running watch targeting serious trail and road runners who want multi-sport tracking and real-time metrics. The Oura Ring 4 is a screenless, subscription-based health tracker for people who care about sleep quality, recovery, and long-term wellness data rather than live workout feedback. Comparing them directly is unusual, but useful if you are deciding where to spend a similar budget.

Specs at a Glance

Price: Cheetah 2 Ultra £599.90 outright; Oura Ring 4 $349-$499 plus $5.99/month subscription
Battery life: Cheetah 2 Ultra 55h GPS mode; Oura Ring 4 up to 168h (7 days) passively
GPS: Cheetah 2 Ultra dual-frequency GNSS onboard; Oura Ring 4 none, relies on phone GPS
Display: Cheetah 2 Ultra has a screen; Oura Ring 4 is screenless
Weight: Oura Ring 4 is 4-6g; Cheetah 2 Ultra weight not confirmed but is a full wrist watch
Heart rate sensor: Both use optical PPG; Cheetah 2 Ultra is wrist-based, Oura Ring 4 is finger-based infrared and red LED
Additional sensors: Cheetah 2 Ultra adds SmO2, barometric altimeter; Oura Ring 4 adds skin temperature sensor
Water resistance: Oura Ring 4 rated to 100m; Cheetah 2 Ultra water resistance not confirmed

GPS and Tracking Accuracy

The Cheetah 2 Ultra scored 81% on a standardised 10-mile GPS accuracy test and 85% on a trail-specific test, which is a real improvement over its predecessor but still below the Garmin Forerunner 970 at the same price point. The dual-frequency GNSS performs better in tree-canopied terrain than open roads, which matters for the trail runners this watch targets.

The Oura Ring 4 has no onboard GPS at all. It maps workouts using your phone's GPS signal, which is a fundamental limitation for any runner who trains without a phone. As a passive health tracker it never claimed GPS capability, but if you want accurate route tracking, the ring cannot provide it.

For heart rate accuracy, the Cheetah 2 Ultra delivered strong results across multiple test conditions, including high-intensity HYROX-style efforts in heat. The Oura Ring 4 benefits from finger-based arterial signal quality, which is cleaner than wrist-based optical readings and gives it a real advantage for resting and sleep HRV measurements. During exercise, however, a ring worn on the finger is not designed for real-time workout heart rate monitoring.

Battery Life

The Oura Ring 4 wins on raw battery endurance for passive tracking: up to 168 hours between charges. The Cheetah 2 Ultra's projected 55 hours of GPS-on battery life is strong for a GPS running watch, but that figure has not been independently confirmed in live field testing. In daily smartwatch mode the Cheetah 2 Ultra will last longer than 55 hours, but the Oura Ring 4 still has a significant advantage for users who dislike frequent charging.

For Athletes: Who Wins?

Road running: Cheetah 2 Ultra. It has onboard GPS, real-time pace and heart rate, and an 81% GPS accuracy score. The Oura Ring 4 cannot track a run independently.
Trail running: Cheetah 2 Ultra. The 85% trail GPS score, SmO2 muscle oxygen sensor, and barometric altimeter are built for this. The ring has none of these features.
Triathlon or multi-sport: Cheetah 2 Ultra by default. The Oura Ring 4 is not a multi-sport device.
Sleep and recovery tracking: Oura Ring 4. Its finger-based PPG produces cleaner HRV and sleep stage data than wrist-based devices. Independent research places it ahead of Garmin for sleep stage accuracy and on par with Whoop. If optimising recovery is your primary goal, the ring is the better tool.

Verdict

These devices do not compete. If you run, train, or race and need GPS workout tracking, buy the Cheetah 2 Ultra. The Oura Ring 4 cannot replace it. If your priority is sleep quality, recovery monitoring, and long-term health data in a device you barely notice, buy the Oura Ring 4. The Cheetah 2 Ultra cannot replace it either.

For most athletes who want one device, the Cheetah 2 Ultra is the practical choice because it covers workouts and provides recovery data, even if that recovery data is less precise than the Oura's. The Oura Ring 4 is the right buy for health-focused adults who do not need real-time workout metrics and want the most accurate passive biometric monitoring available in a wearable. Some users will own both, and that is a legitimate setup if budget allows.