Amazfit T-Rex Ultra 2 vs Polar Street X

Amazfit T-Rex Ultra 2 and Polar Street X are watches both released in 2026 by different brands, with overlapping phone compatibility. This comparison separates the catalog's listed specifications from missing information and approximate values. It covers 17 fields, including 10 exact differences; it does not choose a winner.

Specifications side by side

"Not listed" means the catalog has no usable value for that field. It does not mean the watch lacks the feature. Approximate values stay visible but do not support the difference count or numeric deltas.

Where they differ

• Display: Amazfit T-Rex Ultra 2 lists AMOLED 1.5", sapphire; Polar Street X lists 1.28-inch AMOLED, 416×416, Gorilla Glass 3.
• Battery, as listed: Amazfit T-Rex Ultra 2 lists Up to 30 days · 50+ GPS hours; Polar Street X lists Up to 10 days · 43 GPS hours. These are the full listed battery descriptions. Different modes or case variants prevent a single numeric battery-life delta.
• Operating system: Amazfit T-Rex Ultra 2 lists Zepp OS 6; Polar Street X lists PolarOS. The listed software descriptions are not a guarantee of the software version currently installed on an individual watch.
• Cellular connection: Amazfit T-Rex Ultra 2 lists None; Polar Street X lists None · Bluetooth. Variant wording is retained. A cellular specification alone does not confirm activation with your mobile carrier.
• Glass: Amazfit T-Rex Ultra 2 lists Sapphire; Polar Street X lists Gorilla Glass 3. Keep the variant qualifications when comparing an individual model; this row describes the catalog entry rather than every configuration.
• Case material: Amazfit T-Rex Ultra 2 lists Grade-5 titanium bezel and back; Polar Street X lists Reinforced polymer. Keep the variant qualifications when comparing an individual model; this row describes the catalog entry rather than every configuration.
• GPS: Amazfit T-Rex Ultra 2 lists Dual-frequency GNSS; Polar Street X lists Multi-system GNSS.
• Maps: Amazfit T-Rex Ultra 2 lists Yes; Polar Street X lists No.
• Listed sensors and features: Amazfit T-Rex Ultra 2 lists HRV, Readiness score, SpO2, Skin temperature; Polar Street X lists HRV, Readiness score, Skin temperature. This compares the listed feature names, not measurement accuracy, clinical usefulness or availability in a particular country.
• Safety features: Amazfit T-Rex Ultra 2 lists SOS calling; Polar Street X lists None listed.

Where they are the same

• Both list release year: 2026.
• Both list phone compatibility: Android, iPhone.
• Both list payment system: None listed.
• Both list plan requirement: Not required.
• Both list hardware flashlight: Yes.

Which one fits you

Amazfit T-Rex Ultra 2 is listed as a watch compatible with Android, iPhone. Start with that phone requirement before comparing the other rows. The exact differences above are a way to identify which listed specifications matter to your use, not evidence that one model is better in every respect.

Polar Street X is listed as a watch compatible with Android, iPhone. Start with that phone requirement before comparing the other rows. The exact differences above are a way to identify which listed specifications matter to your use, not evidence that one model is better in every respect.

Information is missing on at least one side for: Case sizes, Water rating. Those rows are excluded from the exact difference count.

Related pages

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• Polar Street X specifications
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