A straight line and a trimmer that pops up · review
Panasonic ES-RT37 review
A three-blade foil shaver with arc-shaped foils shaped for under the chin, a pop-up trimmer carrying thirty blades of its own, an hour to charge for fifty-four minutes of use, and a head that rinses under running water.
Where it leaves us The entry Panasonic, with its battery published and its head rinsable. Nothing hidden.
A three-blade system behind arc-shaped foils that Panasonic states are shaped to keep contact under the chin. The pop-up trimmer is not an afterthought — the company gives it thirty blades and a multi-directional head of its own.
The numbers are all published, which is not the norm in this category: one hour to charge, fifty-four minutes of use, washable under running water.
Four things come in the box: the shaver, a charging cable, a cleaning brush and a cap. No stand and no case, which is what the price reflects.
On a shelf where the battery is the field most often left blank, this is the only one of the four shavers that fills both halves of it: fifty-four minutes of use, one hour to charge. The ES-LV67 gives the charge time and not the runtime. The ES-ALT4B gives neither. The Braun gives forty-five minutes and no charge time. Three blades against the LV67’s five is the specification you give up here, and $120 against $185 is what you keep — and this is one of only two foil shavers on the shelf with a live offer on amazon.com at all. The ES-LV67 and ES-ALT4B sit above it in the range; all four are on the foil shavers shelf, and cleaning a shaver properly covers the rinsable head.
Prices quoted in this text were read on 2026-10-12. The live price is at the top of the page.
Where this model is listed
A listing is not an offer: the reference exists on these stores, availability changes daily.
France
Germany
Italy
Spain
United Kingdom
United States
The good points, and the rest
Strengths
The battery figures are published exactly — 54 minutes on a one-hour charge
A pop-up trimmer with thirty blades of its own, rather than a token edge cutter
Washable under running water, stated plainly
The cheapest foil shaver in this group
Compromises
Three blades against five on the Panasonic ES-LV67
No beard density sensor at this tier
Specifications
Blades
Three-blade cutting system
Foils
Arc-shaped, for contact under the chin
Trimmer
Pop-up, 30 blades, multi-directional head
Battery
54 minutes of use, 1 hour charge
Cleaning
Washable under running water
In the box
Shaver, charging cable, cleaning brush, protective cap
Amazon reference
B085F965LX (identical on 5 markets)
EAN
5025232937196
What people ask about this
Three blades or five — what changes?
The number of cutting elements passing over the skin in one stroke. More blades generally means fewer strokes, which is why the count climbs with the price across Panasonic's range. It is also why a five-blade shaver is a bigger head, which is not an advantage under the nose.
What are arc-shaped foils for?
Panasonic states they are shaped to fit under the chin, where a flat foil loses contact. It is a claim about geometry rather than performance, and it is the kind of detail a listing rarely bothers with.
Our score
7.2/ 10
The entry Panasonic, with its battery published and its head rinsable. Nothing hidden.
Who this one is for, among grooming devices
A daily dry or wet shave, with the head rinsed at the tap afterwards.
Specifications: the manufacturer sheet for grooming tools and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
2 foils + MicroComb · 3 flex blades · 100% waterproof · 45 min · made in Germany
Two Braun foils either side of a middle trimmer, three flexing blades, a MicroComb that Braun states catches more hair per stroke, a body it states is 100% waterproof, and forty-five minutes of runtime with a five-minute quick charge.
Best for: A daily shave, wet or dry, with a narrow head for under the nose.
3 blades, 30° nano-edged · linear motor 39,000/min · beard sensor · 8-way head
Three Japanese stainless blades ground at 30 degrees, a linear motor running 39,000 cutting actions a minute, a beard density sensor, a head flexing in eight directions, plus a shaving-foam mode, a travel lock and a three-minute quick charge.
Best for: A dense or uneven beard, shaved wet with foam.
5 blades · linear motor 70,000/min · 16D flex head · beard sensor
Five blades, a linear motor at 70,000 cutting actions a minute, and a head that moves in sixteen independent directions. Panasonic states the steel blades shave as on the first day for five years, tested against artificially aged units.
Best for: A thick beard shaved daily, where the number of passes is the actual complaint.