Tissot Le Locle Powermatic 80 Open Heart 39mm Mens Watch

Ref. T0064071603301

Le Locle takes its name from the Swiss Jura valley where Tissot has been making watches since 1853, and the line was conceived to honour that place rather than simply reference it. This open-heart variant cuts an aperture into the guilloché dial to expose the balance wheel directly below 12 o'clock, which sits alongside applied Roman numerals and leaf-shaped hands in a way that reads as restrained rather than theatrical. The Powermatic 80 calibre inside runs at 21,600 vibrations per hour, a lower beat than most Swiss automatics, which is precisely how it achieves its 80-hour reserve — the longest you will find at this tier without reaching for something considerably more expensive. At 9.8mm the case is slim enough that 39mm wears closer to the wrist than that diameter might suggest. The sapphire caseback is engraved with the Le Locle signature, so there is something to look at from both sides. The strap deserves honesty: it is synthetic, and noticeably so out of the box, though owners report it loosens with wear. The 19mm lug width is not a standard Tissot stocking size, so replacements need sourcing independently — which, given the strap, is worth knowing before purchase.

Reference

T0064071603301

Brand

Tissot

Case size

39mm

Case thickness

9.80mm

Lug width

19mm

Case material

Stainless steel

Case shape

Round

Dial

Silver

Crystal

Sapphire

Movement

Automatic

Calibre

Powermatic 80

Functions

Date, Skeleton dial

Water resistance

30m

Bracelet / strap

Leather strap

Strap colour

Brown

Clasp

Butterfly clasp

Lume

Luminous

Retailer

Goldsmiths