Longines Conquest vs Tissot PRX Powermatic 80
Longines Conquest L3.720.4.02.9 vs Tissot PRX T1374071104100, compared on the specs each brand publishes.
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The short answer
Two sporty steel automatics on bracelets, a step apart in price.
- Case size: the Tissot PRX T1374071104100 is 2 mm larger (40 mm vs 38 mm).
- Thickness: the Tissot PRX T1374071104100 is 0.03 mm thicker (10.93 mm vs 10.9 mm).
- Power reserve: the Tissot PRX T1374071104100 is 8 hours longer (80 h vs 72 h).
- Price: the Tissot PRX T1374071104100 lists for $1,350 less in the US ($850 vs $2,200).
- Lug width: Longines Conquest L3.720.4.02.9 has 19 mm; Tissot PRX T1374071104100 has 12 mm.
Side-by-side specs
| Spec | Longines Conquest L3.720.4.02.9 | Tissot PRX T1374071104100 |
|---|---|---|
| Case diameter | 38 mm | 40 mm |
| Thickness | 10.9 mm | 10.93 mm |
| Lug-to-lug | 46.8 mm | Not published by Tissot |
| Lug width | 19 mm | 12 mm |
| Calibre | L888.5 | Not stated |
| Movement | Automatic | Automatic |
| Power reserve | 72 h | 80 h |
| Water resistance | 100 m | 100 m |
| Crystal | Sapphire | Sapphire |
| Case material | Stainless steel | Stainless steel |
| Ships on | Rubber strap | Bracelet |
| Weight | 96 g | 138 g |
| US list price | $2,200 (US list) | $850 (US list) |
| Dial | Sunray green | Blue |
| Status | In production | In production |
| Suits wrists of about our sizing guide | 15.8–17.0 cm | 16.0–17.9 cm |
Specs summarised in our own words from the brand's product pages: L3.720.4.02.9 source (checked 3 Nov 2026) T1374071104100 source (checked 3 Nov 2026). "Not published" means the brand page we checked doesn't list it, so we leave it blank rather than guess.
Wrist fit
Lug-to-lug decides overhang more than diameter does. Enter your wrist to see how each one should wear.
- Longines Conquest L3.720.4.02.9 –
- Tissot PRX T1374071104100 –
Same rule of thumb as Watch Finder: case diameter of about 23.5% of your wrist circumference (−2 mm to +2.5 mm), and lug-to-lug no longer than about 29% of it plus 1 mm. A guide, not a rule; flat or round wrists differ.
Strap fit
The Longines Conquest L3.720.4.02.9 has 19 mm lugs. The Tissot PRX T1374071104100 has 12 mm lugs. A strap bought for one won't fit the other. Size charts: Longines lug width chart · Tissot lug width chart.
Which should you buy?
It is the more compact case on paper (40 mm across). Our sizing guide puts it at about 16.0–17.9 cm.
It has the lower US list price, $850, a $1,350 difference.
It has the longer published power reserve: 80 h.
Prices and where to buy
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More: All Longines Conquest references · All Tissot PRX references.
Questions
Which is bigger, the Longines Conquest L3.720.4.02.9 or the Tissot PRX T1374071104100?
Per the brands, the Longines Conquest L3.720.4.02.9 is 38 mm across and the Tissot PRX T1374071104100 is 40 mm.
Which is cheaper?
The Tissot PRX T1374071104100, at a US list price of $850 vs $2,200 when we checked.
Which is more water-resistant?
Longines Conquest L3.720.4.02.9: 100 m. Tissot PRX T1374071104100: 100 m.
Have you tested these watches?
No. This comparison uses brand-published specs and our own analysis of them, not hands-on testing.
Watch.co is independent and not affiliated with any brand. We haven't handled these watches for this page: everything here comes from brand-published specs and our own analysis. Brand names are used only to identify products.