The Panasonic ER-GB42-K Cordless Men’s Beard Trimmer delivers a tailored and precise grooming experience for beards and mustaches.
Recognized as an “Amazon’s Choice” product, it stands out for its high customer ratings, competitive pricing, and fast availability.
With over 3,000 units sold in the last month alone, it has become a trusted favorite among grooming enthusiasts. Designed to combine ease of use with reliable performance, this trimmer features adjustable settings that cater to different beard lengths and styles.
Whether for quick touch-ups or detailed shaping, the ER-GB42-K offers convenience and control, making daily grooming effortless and consistent.

Product Overview and Key Features

The Panasonic ER-GB42-K is highlighted as an “Amazon’s Choice” product, indicating it’s highly rated and well-priced, with over 13,000 ratings resulting in an average of 4.3 out of 5 stars.
Key features of this beard trimmer include:
Personalized Cutting and Sculpting:
The trimmer features an adjustable dial with 19 length settings, allowing for precise control over your desired look.
The cutting length steps are from 1.0mm to 10mm, and a 0.5mm cutting length is possible without the attachment. This dial is conveniently positioned on the handle for quick adjustments.
Precision 45-Degree Blade Cutting System:
It utilizes ultra-sharp, hypoallergenic blades honed to an acute 45-degree angle. This design is intended for quick, efficient grooming of hair, beard, and mustache, even for thick, dense, or unruly hair, creating a “perfect edge”.
Snap-on Comb Attachment:
An included comb attachment is designed to raise flattened or uncooperative hairs, making them easier to cut smoothly and effortlessly.
Wet/Dry Operation and Washable Design:
The ER-GB42-K is a waterproof, 100% washable cordless trimmer, offering the flexibility to trim comfortably in or out of the shower.
For quick and convenient cleaning, it has an easy-open water drain in the trimmer head, allowing warm running water to flow through the blades.
Rechargeable Battery and Cordless Use:
The trimmer charges quickly using an included AC wall adaptor and provides up to 50 minutes of cordless use. An indicator light glows red when charging is active.
Ergonomic Grip for Maximum Comfort:
Its sleek, lightweight, and durable design includes a rubberized, ergonomic handle, providing optimum comfort, total control, and precise cutting and trimming results.
Portability:
The mustache trimmer, comb attachment, and charging/storage stand are designed to fit easily into bags and luggage, making it convenient for travel.
Pricing and Availability
The Panasonic ER-GB42-K is available at different price points depending on current promotions:
- Prime Day Deal: It is offered at $34.99, representing a 36% savings from its list price. This deal is exclusively for Amazon Prime members.
- Exclusive Prime Price (Regular): Another price listed is $39.99, with a 27% savings.
- List Price: The suggested retail price is $54.99. The product is “In Stock” and ships from and is sold by Amazon. Delivery dates vary based on location and Prime membership status.
Protection Plans

To protect your purchase, Asurion, LLC offers several protection plans:
2-Year Personal Care Protection Plan:
Available for $3.99. This plan covers accidental damage, including drops, spills, and broken parts, as well as breakdowns.
Coverage starts on the date of purchase, including power surges from day one, and malfunctions are covered after the manufacturer’s warranty expires.
3-Year Personal Care Protection Plan:
Priced at $5.99. This plan offers similar coverage to the 2-year plan, including accidental damage, breakdowns, power surges, and post-manufacturer warranty malfunctions.
Complete Protect Plan:
This is a monthly subscription for $16.99/month that covers all eligible products purchased from Amazon in the past year and going forward. It includes extensive coverage for malfunctions, failures, drops, and spills for eligible portable items.
Claims are quick and easy, with repair, replacement, or reimbursement up to the purchase price (excluding tax), and coverage up to $5,000 in total claims per 12-month period. This plan excludes products used commercially.
Return Policy:
Amazon offers a 30-day refund/replacement policy for this item, provided it is returned in its original condition. Free returns are available, with at least one free shipping option.
The return process involves initiating the return from your Amazon orders, selecting a preferred free shipping option, and dropping off the item.
Customer Reviews and Feedback

With a 4.3 out of 5 stars rating from over 13,000 global reviews, customer feedback for the ER-GB42-K is mixed but generally positive. The breakdown of ratings shows 64% 5-star, 18% 4-star, 8% 3-star, 4% 2-star, and 6% 1-star reviews.
AI-generated insights from customer reviews highlight several key points:
Adjustable Length:
Customers appreciate the trimmer’s length adjustment capabilities, specifically the 19 settings ranging from 1mm to 10mm, finding the dial “super easy to get the exact trim” they want.
The guard is described as very firm, preventing bending. However, some customers reported the length setting breaking after a few months.
Ease of Use:
Many customers find the trimmer easy to use and control, noting its simple grooming capabilities and convenience for on-the-go maintenance. One reviewer mentioned it’s “easy to open and clean”.
Trimmer Quality/Performance:
Opinions are mixed. Some customers praise its performance, stating it “cuts great,” is “sharp, smooth,” and delivers a “clean, even trim”. Conversely, others report that it “does not cut well or at all,” is “weak,” “not powerful enough,” or “takes several passes”.
One customer even called it the “worst beard trimmer” they had ever used. A specific review noted a narrower shaving blade and less sharpness compared to older models.
Battery Life:
Feedback on battery life is varied. Some users find it “solid,” “dependable,” and that it “holds a charge” well. Others, however, reported “awful” battery life, stating it “doesn’t last long” or only provides 2-2.5 shaves per charge.
It also takes a long time to fully charge, with one customer noting a 20-hour charge time and another mentioning a 30-hour charge cycle. The product specifications indicate a 20-hour charge time for 50 minutes of use.
Build Quality:
Customer opinions are mixed on the trimmer’s quality. Some appreciate its “sturdy in hand” feel and “good quality”. Others report it being “fragile” or “breaking after a few months of use”.
Value for Money:
There’s mixed sentiment regarding its value. Some customers believe it offers “great value” and is “very good for the price”. However, others feel it is “overpriced” or “not worth the money”.
Hair Pulling:
A recurring negative point is that the trimmer “pulls hair”, especially during neck and beard trimming, and can sometimes get stuck.
The Panasonic ER-GB42-K beard trimmer offers precision, wet/dry functionality, and ease of use, making it a popular choice for personal grooming.
While many customers laud its performance and convenience, some report issues with battery life, hair pulling, and inconsistent build quality.
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