
Oster Electric Can Opener with Knife Sharpener
Score: 76/100
Canslab Ultrablade PRO Auto Stop
Score: 80/100Rankings

The Canslab Ultrablade PRO is a rechargeable, hands-free can opener that delivers fast, quiet side-cutting with an auto-stop feature. Its trade-off is incompatibility with rimless cans and vague dimension details. Best suited for arthritis-friendly home use and camping.

The Oster electric can opener combines a patented Power Pierce blade with stainless-steel durability, automatically shutting off and handling tall cans. Manual cord wrap-around storage and a modest knife sharpener are trade-offs. Suited for households that frequently open tall cans and value sturdy construction.
| Attribute | ![]() | ![]() |
|---|---|---|
| ↓ lower better | 1,179 g | 306 gbest |
— | 2,000 mAhbest | |
1 yearsbest | — | |
— | 2best |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Power & Battery(1) | ||
Power Source | ac | Lithium Ion |
Features(2) | ||
Cutting Mechanism | power_pierce | side-cut |
Can Size Compatibility | tall | Standard |
Design & Build(3) | ||
Blade Material | stainless_steel | Stainless Steel |
Weight (g) | 1179 g | 306 g |
Overall Dimensions (H×W×D) (cm) | 15.24 x 12.7 x 25.4 cm | 5.7×5.7×5.7 cm cm |

Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the Oster opener for its patented Power Pierce blade, stainless-steel durability, and tall-can compatibility, noting that the auto shut-off and hands-free design make it especially convenient. However, they point out that the built-in knife sharpener is only modestly effective and that the manual cord storage feels less refined than retractable alternatives.
Everyday users echo the professional praise for effortless tall-can opening, clean cuts, and hands-free convenience, while consistently reporting that the knife sharpener offers only limited sharpening and that the cord storage is fiddly to manage.

“this little machine does it all”

“just press and it goes around automatically”



Professional reviewers and editors highlight the Ultrablade PRO's hands-free automation, full-lap side-cutting and auto-stop as standout features that eliminate manual effort. They commend its senior-friendly one-touch operation, eco-friendly rechargeable battery with USB-C charging, and performance gains of 28% less noise and 28% faster cutting compared to AA-powered models, while noting its limitation to rimmed cans and vague dimension details.
Everyday users consistently praise the opener's effortless one-press operation, smooth safe edges, strong magnetic lid holder and long battery life of about 120 cans per charge. Common themes include appreciation for its quiet performance and portability for camping, with recurring concerns about reduced battery life on larger cans and unclear storage dimensions.