Colomer & Sons · Microbrand · Spain
Colomer & Sons Cosmos
- ETA Valjoux 7753
- 42 mm × 17 mm
- Sapphire crystal
- 100 m water resistance
Where to buy
Movement
- Caliber
- ETA Valjoux 7753
- Type
- Automatic
- Tier
- Upper
- Complications
- Small seconds, Chronograph, Date
- Frequency
- 28,800 bph
- Power reserve
- 48 h
- Hacking
- Yes
- Accuracy (factory)
- —
Case
- Diameter
- 42 mm
- Lug to lug
- —
- Thickness
- 17 mm
- Lug width
- 20 mm
- Material
- Steel
- Hardening
- —
- Water resistance
- 100 m
- Crown
- Screw-down
- Case back
- Display
- Bezel
- —
Crystal & dial
- Crystal
- Sapphire
- Shape
- —
- Anti-reflective
- —
- Lume
- Luminova on hands, indices and solar-system elements (grade not stated)
Bracelet
- Bracelet
- Not offered
Straps
- Strap 1
- Leather, quick release, Blue alligator-pattern ('cocodrilo') strap with safety clasp and easy release
Weight
- Head only
- —
- On bracelet
- —
- On strap
- —
- Stated weight (basis not given)
- 85 g
Prices
About this entry
80% of key specs known. Missing: lug-to-lug, hardening, AR coating.
Brand spec list: ETA Valjoux 7753 automatic chronograph (27 jewels, 28,800 vph), Luminova on hands, indices and solar-system elements, 42mm case, chronograph minutes at 3 and small seconds at 9, screw-down crown, display caseback, sapphire crystal, blue "cocodrilo" strap with safety clasp and easy release, 10 ATM, 85 g, height 17mm, 20mm strap width, limited to 20 pieces. Case material isn't given in the spec list; steel is from the description ("acero") and the photos. Whether the strap is genuine alligator isn't stated. The 17mm "altura" is recorded as total thickness; the brand doesn't say whether it includes the crystal.
Last verified: 2026-10-31. Edit or correct this entry.
Sources
- Colomer & Sons, Cosmos (product page and spec list) accessed 2026-10-31
