TACS Day and Night 38 mm (TS2601A–E) — release discovery

Published 25 October 2026 · Release discovery — specs checked against the cited sources.

Short overview, not a review. Pros and cons restate published facts only. No buying advice. Numbers not shown on a source we opened are omitted or marked unpublished.

TACS Japan’s Day and Night 38 mm collection page lists TS2601A, TS2601B, TS2601C, TS2601D, and TS2601E at 38 mm wide, 8.5 mm thick, and 35,200 yen including tax. Lug-to-lug is unpublished. Fit: Incomplete (lug-to-lug unpublished).

Verified specs

Item	Published	Source
References	The collection page and the five reference pages are headed TS2601A, TS2601B, TS2601C, TS2601D, and TS2601E, under “DAY&NIGHT 38mm”.	TACS Japan
Japan-only colours	The TS2601A page prints “JAPAN Limited（日本別注モデル）TS2601A” (Japan limited, Japan special-order) and “Sand Earth Brown（サンドアースブラウン）”. The TS2601B page prints “JAPAN Limited（日本別注モデル）TS2601B” and “Flare Gold（フレアゴールド）”. The TS2601C, TS2601D, and TS2601E pages do not print a colour name.	TACS Japan
How it shows the time	The collection page prints “1本の針が1周することで24時間を表示する” (one hand makes one turn and shows 24 hours). The spec list prints “ムーブメント：クオーツ” (movement: quartz).	TACS Japan
Movement maker	The collection page and the TS2601C, TS2601D, and TS2601E pages print “スイスRONDA社製のムーブメント” (a movement from Swiss maker RONDA). Those pages do not print a movement number next to that name. The visible text on the TS2601A and TS2601B pages does not print “RONDA”.	TACS Japan
Case size	Each reference page prints “サイズ：径38mm / 厚8.5mm” (size: diameter 38 mm / thickness 8.5 mm).	TACS Japan
Smaller than the previous case	The collection page prints “ケース径を41mmから38mmに” (case diameter from 41 mm to 38 mm). The TS2601C, TS2601D, and TS2601E pages print “ケース径を41mmから38mmへ”. The TS2601A and TS2601B pages do not print “41mm”.	TACS Japan
Lug-to-lug	The collection page and the five reference pages do not print lug-to-lug. “径38mm” is the diameter. “厚8.5mm” is the thickness. “腕周り：約13-19cm” (wrist circumference about 13-19 cm) is not lug-to-lug. “ストラップ：レザー（防水加工）18mm” (strap: leather with a water-resistant finish, 18 mm) is the strap line, not lug-to-lug.	TACS Japan
Case, crystal, weight, water resistance	Each reference page prints “ケース：ステンレススチール” (case: stainless steel), “風防：ミネラルガラス” (crystal: mineral glass), “重さ：43g” (weight: 43 g), and “防水：5ATM” (water resistance: 5 ATM, 5 atmospheres).	TACS Japan
Price	Each reference page prints “35,200円（税込）” (35,200 yen, tax included). Those pages do not print a Singapore-dollar price.	TACS Japan
English article	Have a Good Holiday (third-party), published 23 October 2026, prints “The case diameter goes from 41mm down to 38mm”, “¥35,200 (tax included)”, “38mm”, “8.5mm”, “43g”, “5 ATM”, and “Quartz”. Its product table lists the same five references. It does not print lug-to-lug.	Have a Good Holiday (third-party)
tacs-watch.com	Does not list TS2601.	tacs-watch.com

Fit on 6–7 in wrists (6.5 in reference)

Fit: Incomplete (lug-to-lug unpublished). TACS Japan’s TS2601 pages print “径38mm” and “厚8.5mm”. They do not use the words lug-to-lug, so this page does not score the 38 mm diameter as lug-to-lug, and it does not turn the 18 mm strap line or the 13-19 cm wrist line into a lug-to-lug figure. The 8.5 mm thickness is under 13 mm. Without a published lug-to-lug, the result stays Incomplete on a 6 in, 6.5 in, and 7 in wrist.

The flat top of the wrist (usable span) is the width a watch can sit on without its lugs hanging over the edge.

Wrist (approx.)	Lug-to-lug	Thickness	Fit note
6.0 in (152 mm)	Unpublished	8.5 mm	Incomplete: TACS Japan’s TS2601 pages do not label lug-to-lug.
6.5 in (165 mm) — reference	Unpublished	8.5 mm	Incomplete: TACS Japan’s TS2601 pages do not label lug-to-lug.
7.0 in (178 mm)	Unpublished	8.5 mm	Incomplete: TACS Japan’s TS2601 pages do not label lug-to-lug.

Not on these pages

Lug-to-lug on TACS Japan’s collection page or on the TS2601A, TS2601B, TS2601C, TS2601D, and TS2601E pages.
A TS2601 product page on tacs-watch.com, checked 25 October 2026.
A colour name for TS2601C, TS2601D, or TS2601E on those pages.
A movement number next to “RONDA” or next to “クオーツ”.
A second thickness figure. The collection page says a two-piece strap reduces the thickness. The size line on the reference pages stays “厚8.5mm”.
A Singapore-dollar price, or a Singapore stockist, on the Japan pages.
A release date on the Japan pages. Have a Good Holiday (third-party) prints 23 October 2026.

Short overview

Pros (from published facts)

TACS Japan prints a 38 mm diameter and an 8.5 mm thickness on TS2601A, TS2601B, TS2601C, TS2601D, and TS2601E.
The collection page says one hand shows 24 hours, and the spec list says the movement is quartz.

Cons / gaps (from published facts)

TACS Japan’s TS2601 pages do not label lug-to-lug, so the fit stays Incomplete.
tacs-watch.com does not list TS2601.
The Japan pages do not list a Singapore-dollar price.

Singapore note

The authorised dealers guide does not list TACS. TACS Japan’s TS2601 pages print “35,200円（税込）” and do not list a Singapore price or a Singapore stockist. A Japan buy means import GST. A watch bought outside Singapore can meet 9% GST on import. Watches are not subject to customs duty in the usual consumer path (see Buying in Singapore).

Sources

Sources opened 25 October 2026. Specs and prices change — confirm at the source.