Short answer: the ÄRiS Ultra mainly adds a 100–220 °C range instead of 160–221 °C, a 2,600 rather than 2,300 mAh battery, and a manufacturer-documented titanium chamber. Both product pages describe convection heating and a 20–30 second heat-up.
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Which one should you choose?
Choose the ÄRiS Ultra if you need temperatures below 160 °C, the larger 2,600 mAh battery, the titanium chamber or an adjustable three-to-seven-minute session timer. Choose the ÄRiS if 160–221 °C and 2,300 mAh cover your use and its current retailer price is lower.
Check live prices and availability on the ÄRiS product page and the ÄRiS Ultra product page. This is an evidence-led decision, not an unsupported hands-on claim. Verified 9 August 2026.
Verified differences
| Feature | ÄRiS | ÄRiS Ultra |
|---|---|---|
| Heating | ECA convection | Advanced convection |
| Temperature | 160–221 °C | 100–220 °C |
| Battery | 2,300 mAh | 2,600 mAh |
| Heat-up | 20–30 seconds | 20–30 seconds |
| Heating chamber | Material not stated on the checked product page | Titanium |
| Session timer | Five-minute shutdown | Adjustable from three to seven minutes |
Claims we no longer publish
The current manufacturer pages do not substantiate 300/133 g device weights, a two-year warranty or pass-through charging. Those figures and the former ceramic-chamber claim for the Ultra have been removed. Claims of a four-week hands-on test, noticeably better airflow or months of durability are also removed until a test protocol and original media exist.
Price and choice
ÄRiS Ultra currently starts at 139 across 44 retailers. Choose it when the 100 °C minimum, larger battery or documented titanium chamber matters. The original ÄRiS remains an option when its total price is materially lower and 160–221 °C covers the intended use.