Oster Cordless T-Finisher Trimmer – 200 Min Runtime

Over three hours of lineups before the battery asks for anything.

The Oster Professional Cordless T-Finisher is a cord/cordless T-blade trimmer rated by Oster at over 200 minutes of run time on a 100-minute charge. It cuts on a black diamox-coated T-blade that adjusts to be zero-gapped, driven by a high-torque motor with adaptive speed control that maintains power through dense hair. This is a finishing tool: outlines, edging, beard detail and necklines.

• Outlasts almost anything else on the station — over 200 minutes of cordless run time.
• Refills between shifts, not between clients — full charge in 100 minutes.
• Drops a hard line rather than a soft edge — T-blade that adjusts to be zero-gapped.
• Keeps its edge through heavy detail volume — durable black diamox coating on the blade.
• Does not stall in the thickest hair — high-torque motor with adaptive speed control.

Specifications

• Motor: High-torque with adaptive speed control
• Blade: Black diamox-coated T-blade
• Blade adjustment: Adjusts to be zero-gapped
• Battery: Lithium-ion
• Run time: Over 200 minutes
• Charge time: 100 minutes
• Operation: Cord and cordless, 8-foot cord
• Weight: 1.6 lb

In the Box

• Oster Cordless T-Finisher trimmer
• Black T-blade
• Charging stand
• Blade oil

Questions Barbers Ask

How long does the Cordless T-Finisher run?

Oster publishes over 200 minutes of run time on a 100-minute charge. Some retailer listings quote lower figures; the number here is Oster's own.

How long is the warranty?

Oster's own product page is inconsistent on this — the description states a 1-year warranty while the warranty section of the same page states 2 years limited. We are not going to pick one for you. Register the tool when you buy it and keep your receipt; ask us and we will chase Oster for the current terms on your unit.

What is a diamox coating?

It is Oster's designation for the hard black finish on this T-blade. The practical benefit is wear resistance — the blade holds its edge through the kind of detail volume that dulls an untreated blade in months.

How does it compare to the Cordless Fast Feed?

Different jobs. The T-Finisher is the detail trimmer — T-blade, zero-gappable, 200+ minutes for edging and outlines. The Fast Feed is the clipper, with a #000 to #1 adjustable blade for tapering and bulk removal. Most barbers run one of each.

Why Barbers Love It

Runtime is the headline: at over 200 minutes it survives a Saturday without a thought. Beyond that it is an Oster T-blade, which barbers already know how to set and maintain, and it zero-gaps without a fight. Adaptive speed control means it does not slow when you push into a dense beard, and the cord option means the tool never leaves rotation.

About Oster

Oster Professional builds clippers, trimmers and blades for barbers and stylists; the T-Finisher name has been part of its professional trimmer line for decades.

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