The Wahl Professional Chromini Duo is a cordless trimmer sold with two blades, and WAHL gives each blade its own job. The T-Blade, with a cutting length of 0.3 mm, is for contours, line-ups, sharp edges and detail work; the U-Blade, at 0.4 mm, is for smooth trimming, straight edging and wide lining. Each blade comes with its own set of guides.
- Cutting length: U-Blade 0.4 mm / T-Blade 0.3 mm
- Speed: 6000 RPM
- Charge time: 2.5 hours
- Weight: U-Blade 141 g / T-Blade 139 g
- Blade setting: zero-gap adjustable
- Power: cordless, lithium-ion
- Guides: 9, in the box
In the box
- The trimmer
- U-Blade and T-Blade
- Six guides for the U-Blade: 1.5 mm, 2.25 mm, 3 mm, 4.5 mm, 6 mm and 9.5 mm
- Three guides for the T-Blade: 1.5 mm, 3 mm and 5 mm
Why the Chromini Duo
A cut in the chair runs in a fixed order: the clipper takes the bulk and the taper, the trimmer sets the outline and the edge, and the foil shaver finishes. This trimmer has that middle job, with a choice of blade. WAHL designs it for “Contours & Detail Work”, sharp edges and line-ups, and close trimming. Rather than two trimmers on the station, one body carries both blades, and the blade you fit decides the work.
What to expect in the hand
Whichever job you are on, the trimmer in your hand is the same cordless body: between the line-up and the wider edge, only the blade and its guide set change. It works on a lithium-ion battery, with an LED light indicator and what WAHL calls a “smart charge function”. Give it a full charge before the first client, and keep an eye on the LED.
Who it is not for
- Taking the bulk off or cutting a taper - that is a clipper's job: the Wahl 5 Star cordless Magic Clip Red
- A skin-smooth finish - that is a foil shaver's job: the Wahl Vanish Shaver
Professional tip
Our order at the chair: draw the outline and the line-up with the T-Blade first. Then change to the U-Blade for the wider edges and the smooth trimming around the line you have drawn. In that order, one blade change per client is enough.
How to use
- Charge it fully before first use and watch the LED light indicator.
- With the trimmer switched off, fit the blade the cut needs and oil it.
- For length, fit a guide from the set made for that blade.
- Work the outline, then the edge.
- Switch it off, brush it out, and set the travel lock before it goes in the bag.
Care and maintenance
After each client, switch off and brush the teeth of the blade clean. At the end of the day, and whenever it starts to drag, put a few drops of clipper oil across the teeth, run it briefly and wipe off the excess. Do the same for the blade you are not using before it goes back in the kit. Keep Wahl Special Blade Oil 200ml at the station for the daily oiling, and Wahl Oil Tube 10ml in the case for work away from it.
Complete your Wahl setup
- Pair it with a clipper - for the bulk and the taper before the outline
- The last pass - a foil shaver after the line-up
- Keep the blades in shape - clipper oil for the station and the case
Frequently asked questions
What is each Chromini Duo blade for?
WAHL's blade panel gives each blade its job. The T-Blade (0.3 mm): “Designed for delicate contours, clean line-ups, sharp edges, and detail work.” The U-Blade (0.4 mm): “Ideal for smooth trimming, straight edging, and wide lining.”
Which guides go on which blade?
Each blade has its own set: six guides for the U-Blade and three for the T-Blade. Fit a guide from the set that matches the blade on the trimmer.
Can the blade be set to zero-gap?
Yes, the trimmer is zero-gap adjustable. A blade set to zero-gap cuts very close, so switch the trimmer off and check the blade after every adjustment.
How do I swap the blades?
Switch the trimmer off first. The blades are quick-detach: take the fitted blade off, fit the other one, and oil it before you start.
How do I keep it switched off in the bag?
Set the travel lock: it keeps the trimmer switched off while you carry it. Brush it out before it goes in.
How do I look after the blades?
Brush the teeth clean after each client. At the end of the day, and whenever a blade drags, put a few drops of clipper oil across the teeth, run it briefly and wipe off the excess. Clean it dry; never rinse it.
Need help with your order? Visit our customer service center and online shopping FAQ for delivery, payment and returns.
Wahl Professional Chromini Duo - Cordless Trimmer with T-Blade 0.3 mm and U-Blade 0.4 mm
The Chromini Duo is one of several Wahl Professional trimmers in our shop. Compare it with the others on their own pages.









