The Timemore Chestnut S5 Pro (also sold as 栗子 S5 Pro) is the first hand grinder this site recommends. It earned that spot because the published specs come closest to a simple brief: one grinder that lives on the kitchen counter and can be set for both pour-over and espresso. The place comes from that match. It is not the result of a points contest.
I use the green one. The official color name is Olive Green; the other color is Matt Black. The photo below is the green Chestnut S5 Pro. On Rakuten, the S5 and the S5 Pro, and black and green, sit next to each other. When you order, choose the model name "S5 Pro" and the green color.
Treat the price as a rough guide. On October 26, 2026 the official Japanese product page showed ¥25,800. That page also called the figure a pre-sale price, and said stock was being replenished with shipping expected around the end of January. Check the same page for tax and whether a unit will actually ship before you buy.
What I've found using it
The green S5 Pro is the one I use. I did not have another grinder before it. I bought it as the first hand grinder I would use seriously.
I use it mostly for pour-over. At about 910g it is heavy for a hand grinder. In daily use the weight has never bothered me. If it stays in the kitchen, that weight is a non-issue. That is my own impression.
Specs from the maker
The figures below follow the official pages as checked on October 26, 2026: the Japanese sales page, and the spec summary on Timemore's blog.
- Burrs: 48mm TriB-048-I, in 420 stainless steel, cut on a 5-axis CNC, hardness 58HRC
- A 12-point pre-breaker. Timemore describes it as combining compression, shearing, and piercing
- External adjustment dial: 90 clicks per turn, 15 microns (0.015mm) per click
- Capacity about 30g. Weight about 910g
- Materials: aluminum alloy, 304 stainless steel, and silicone. Body 180×56mm, handle 185mm. The table on the official blog lists the handle as folding
- Even at the zero setting the burrs do not touch. The gap is about 0.075mm. Timemore notes that uneven pressure can cause a rubbing sound, and says that sound does not mean the grinder is broken
- Timemore marks the flavor direction as a subjective description: "Full bodied, layered clarity." That line is the maker's wording. This site has not published its own cupping of the grinder
Timemore also publishes starting ranges: espresso 0–2.0, moka pot 1.0–3.0, pour-over 5.0–8.0, French press 8.0–9.0. They are a place to begin. A different bag of beans will move the setting. For how those ranges sit next to other brew methods, see the coffee grind size guide.
The review page on Rakuten's official store lists the S5 and the S5 Pro on the same product. Posts from people who bought the S5 are mixed in, so this site does not treat that star average as a rating of the S5 Pro.
What reviewers have written
The notes below summarize published reviews. The stars belong to those outlets. This site has not re-scored them.
CoffeeGeek (September 18, 2026; the English version notes that the unit tested was provided by TIMEMORE) gives it 5/5 overall. The clicks are clearer than on the S3, and the setting is harder to knock off by accident. The review credits pour-over clarity, and the fact that it can grind for espresso, and flags weight as the only caution. The same article also describes the weight as "close to 800g." That differs from the official figure of about 910g, so use the official number for weight. The review also times a pour-over dose of 16g (setting 60) at about 20–30 seconds, and an espresso dose of 18g (setting 9) at 45 seconds to a minute.
La Milan Cafe (October 23, 2026) sums it up as a grinder for someone who wants one unit at home for both pour-over and espresso, and not as a travel grinder. Even with a folding handle, about 910g still makes it a grinder that lives on the counter.
Pull and Pour Coffee treats the 48mm burrs, the 15-micron external adjustment, the wide mouth, and the large knob as a practical everyday package. That article lists the weight as 798g and the color names as Obsidian Black and Hunter Green. The official figures are about 910g, with Matt Black and Olive Green, so check the official page for color and weight when you buy.
The shared thread is the feel of the adjustment, and the assumption that the grinder stays at home. None of these reviews call it the first grinder to pack in a travel bag.
Why it is No.1 here
48mm burrs, 90 clicks, and a dial you can reach from the outside. You can leave it on the counter and keep the setting for the same cup each morning. Among the hand grinders this site lists, the S5 Pro matches that brief most directly. About 910g is not a light grinder. If you want to carry one, look at No.2.
Buy buttons appear on the product card when an affiliate URL is set. Our policy is on the disclosure page.
No.2 is the EPEIOS Essence Go. For beans, start with Coffee Carrot (珈琲きゃろっと), the subscription I kept for about a year. That shop page is in Japanese.
If you are choosing between the two, read Timemore S5 Pro vs EPEIOS Essence Go. This review does not include timed cleaning tests. For how to pick a first hand grinder, see burr size, adjustment, weight, and where it lives. A coffee scale is what makes a saved grind setting repeatable.
Search for the Timemore Chestnut S5 Pro on Amazon.co.jp
Availability on Amazon.co.jp varies by region, so check the listing and the seller before ordering. The price on the store page is the one that matters.
Read next
Some links on this page are ads. See our disclosure for details.