Works well and Lithium Ion batteries can’t be beat!
As long as you let it discharge once in a while (I use it twice a week and charge it once a month) it works well, and after a year is running and hold a charge as well as day one!
The Remington MB4040 Lithium Ion Titanium Mustache and Beard Trimmer is a sleek, adaptable grooming tool designed to help you stay looking sharp. This trimmer features sharp, long-lasting blades that are titanium coated for extra durability. Easily switch between nine lock-in length settings for a variety of trimming lengths. The trimmer offers multiple convenient features, like a rechargeable battery, ergonomic shape, and washable design.
Remington MB4040 Lithium Ion Men’s Mustache & Beard Trimmer At a Glance: Titanium-coated, self-sharpening blades are highly durableNine lock-in settings offer variety of trimming lengthsThree specialized attachments for all areas of facial hairBuilt-in lithium ion rechargeable batteryTwo-year warranty 
Trimmer features titanium-coated, self-sharpening, self-oiling blades for superior cutting performance.
View larger. 
Choose between beard, goatee, or stubble trimmer attachable heads.
View larger. Modular Cutting System with Multiple Blades
The Remington MB4040 comes equipped with titanium-coated, self-sharpening, self-oiling blades. The titanium coating makes the blades strong, durable, and long lasting. The wide blade delivers a fast, efficient trim, while the detail blade is great for trimming in tight spots. The blades are also precision ground, rather than stamped, for superior cutting performance.
Nine different length settings allow for a variety of grooming lengths, and a zoom wheel makes setting your desired length easy. This groomer also features a powerful motor, so it makes short work of even the thickest hair.
Beard, Goatee, and Stubble Trimmers
The trimmer features three different attachable heads. Choose between the beard, goatee, or stubble trimmer. The beard trimmer creates new styles or maintains your current beard, and has wider teeth for powering through thick facial hair. The goatee trimmer uses a precision detail blade to sculpt fine lines around goatees, mustaches or other facial hair. A stubble trimmer has finely pitched teeth to maintain three-day stubble every day of the week.
Sleek, Functional Design
The Remington MB4040 trimmer is designed to be quick, easy, and comfortable to use. It has a slim body with rubberized no-slip grip, so it is comfortable to hold and easy to maneuver. A quick-release blade system makes for fast, easy changes. The trimmer’s head is fully washable, so a quick rinse removes loose hair.
Cordless Operation with Powerful Motor
The cordless MB4040 features a powerful lithium-ion battery for up to 120 minutes of operation. It fully charges in only three hours. Its powerful motor offers twice as much torque for more cutting power, especially with thick hair.
The MB4040 is backed by a two-year warranty.
Remington has been helping the world get ready for over 70 years. Experts in innovation, Remington offers cutting-edge technology. They work with salon professionals from all over the world to produce hair styling products that really work. Remington’s mission is to help you look good and feel like you’re ready for anything, so you can look in the mirror and say, “Okay, world, here I come.”
What’s in the Box
Remington MB4040 Lithium Ion Men’s Mustache & Beard Trimmer, beard attachment, goatee attachment, stubble attachment, charger, and user’s manual.
Easily switch between nine lock-in length settings for a variety of styles. (Click each to enlarge)
Mustache and Beard Trimmers 
MB200 Titanium Mustache and Beard Trimmer MB4550 Rechargeable Mustache and Beard Trimmer with Exclusive Touch Control MB4020 Mustache and Beard Trimmer MB4040 Lithium Ion Mustache and Beard Trimmer Corded/Cordless
Titanium Coated Blades
Self-Sharpening Blades
Precision Ground Blades
9 Lock-In Length Settings
Beard Trimmer
Goatee Trimmer
Washable Design
Corded/Cordless
Titanium Coated Blades
Self-Sharpening Blades
Touch Interface with Lock-In Settings
175 Lock-In Length Settings
40-minute cordless runtime
USB charging Cordless
Titanium-coated blades
Self-Sharpening Blades
Precision Ground Blades
9 Lock-In Length Settings
Beard Trimmer
Goatee Trimmer
Washable Design
40-minute cordless runtime
Cordless
Lithium-Ion Battery – 120 minute cordless runtime
Titanium-coated blades
Self-Sharpening Blades
Precision Ground Blades
9 Lock-In Length Settings
Quick release blade system
Beard Trimmer
Goatee Trimmer
Stubble trimmer
Washable Design
Product Features
- Lithium ion powered
- Titanium coated blades
- Cordless 120 minutes of runtime
- 3 precision ground blades
- 9 length settings
Long lasting battery I was waiting to write a review until I had to recharge this trimmer after the initial charge. I ordered this trimmer on March 3rd 2012 and as of June 12th I still have not had to recharge it. I use it once or twice a week, not every day. I think it is great. If you’ve had one of those trimmers with multiple attachments that sit in a poorly designed stand that seems to spill half of them out on the bathroom counter whenever you are trying to use one of them you will appreciate this trimmer. It…
Don’t throw out the stubble blade I got this model for a few reasons: 1) The adjustment wasn’t a cheap plastic guard, it uses Li-Ion batteries for long run-time and quick recharge and 3) it was a reasonable price. While I can see the price almost doubled in the two weeks since I bought my trimmer (shame on the seller!). I am very picky when it comes to my electronics and health products, so it says something that I am very pleased with this trimmer.The thing I like the best is that since the guard adjustment is in…
Exactly What Fans of the Old MB Line Wanted I’ve used several of the Remington MB line of trimmers over the past 10-years to groom my full beard. The old trimmers had a bad habit of losing the ability to correctly hold a charge after a couple years. This unit works exactly as the old trimmers did: with 9 length settings for triming, a simple on/off switch, and a guard that easily comes off for cleaning the unit of cut hair. There’s no loud vacuum included, there’s no useless secondary trimmer to pop open randomly, and — most…