ELKA · Microbrand · Switzerland
ELKA R Series
- La Joux-Perret G101
- 40.8 mm
- Sapphire crystal
- 50 m water resistance
Movement
- Caliber
- La Joux-Perret G101
- Type
- Automatic
- Tier
- Premium
- Complications
- Hours, Minutes
- Frequency
- 28,800 bph
- Power reserve
- 68 h
- Hacking
- Yes
- Accuracy (factory)
- —
Case
- Diameter
- 40.8 mm
- Lug to lug
- 46.5 mm
- Thickness
- —
- Lug width
- 20 mm
- Material
- Steel (1.4404 (316L))
- Hardening
- —
- Water resistance
- 50 m
- Crown
- —
- Case back
- Display, screw-down
- Bezel
- —
Crystal & dial
- Crystal
- Sapphire
- Shape
- Box, domed
- Anti-reflective
- Yes (side not stated)
- Lume
- —
Bracelet
- Bracelet
- —
Straps
- Strap 1
- Leather, Black semi-rembordé "veau glacé" calf (R01wo) or cognac rembordé suede (R02wo), 20mm tapering to 18mm, steel 1.4404 pin buckle
Weight
- Head only
- —
- On bracelet
- —
- On strap
- —
Prices
Variants
| Name | Reference | Dial |
|---|---|---|
| R01wo 1736 Edition | R01wo | black |
| R02wo Pierre d'Hauterive | R02wo | beige |
About this entry
60% of key specs known. Missing: thickness, weight, hardening, crown, lume, bracelet offered.
ELKA's "Tour des Chavannes" series, named after the Neuchâtel tower that stood on the site of the brand's boutique at Rue des Chavannes 16; the dial signature reproduces engineer Henri Ladame's lettering from his 1867 plans. Shown as "New" on the brand store in October 2026; release year not stated. R01wo "1736 Edition": black dial after Samuel Müller's 1736 painted tower dial, rose-gold Roman numerals, polished rose-gold hands. R02wo "Pierre d'Hauterive": sand-coloured dial after Hauterive limestone, black Roman numerals, brushed black hands. "wo" marks the no-date version; the spec sheets list the functions as hours and minutes only, and the photos show two hands with no seconds hand, so the G101's seconds are recorded as not shown. The four-digit code is the strap; the product descriptions call them R01wo-0817 and R02wo-0814 while the page titles and URLs use 0807 and 0804. Brand spec: La Joux-Perret G101, 68h; 1.4404 steel case, 40.8mm, 10.80mm thick, 46.5mm lug-to-lug, screwed case back with sapphire window, chevé box sapphire with AR treatment on one (unstated) side, 50m. Whether the 10.80mm includes the crystal isn't stated (Monochrome's 2022 spec for the D and X Series case, also listed by ELKA at 10.80mm, gave 11.85mm). Lug width from the 20/18mm strap. Lume not mentioned. Weight not published. Thickness is left blank (2026-10-30): ELKA's D Series sheets for this case give 10.80 or 11.85mm and no source says whether the crystal is included.
Last verified: 2026-10-25. Edit or correct this entry.
Sources
- ELKA, R01wo-0807 product page (specification, description, price) accessed 2026-10-25
- ELKA, R02wo-0804 product page (specification, price) accessed 2026-10-25
- ELKA, R Series "Tour des Chavannes" collection page accessed 2026-10-25

