Synchron · Microbrand · Austria
Synchron Poseidon
- La Joux-Perret G100
- 42 mm
- Sapphire crystal
- 300 m water resistance
Where to buy
Movement
- Caliber
- La Joux-Perret G100
- Type
- Automatic
- Tier
- Premium
- Complications
- Date
- Frequency
- 28,800 bph
- Power reserve
- 68 h
- Hacking
- Yes
- Accuracy (factory)
- —
- Grade
- Top
Case
- Diameter
- 42 mm
- Lug to lug
- 45 mm
- Thickness
- —
- Lug width
- 20 mm
- Material
- Steel (316L)
- Hardening
- —
- Water resistance
- 300 m
- Crown
- Screw-down
- Case back
- —
- Bezel
- Unidirectional, 120 clicks, 60-minute elapsed time, sapphire insert, lumed
Crystal & dial
- Crystal
- Sapphire
- Shape
- —
- Anti-reflective
- —
- Lume
- Super-LumiNova
Bracelet
- Bracelet
- Not offered
Straps
- Strap 1
- Rubber, ISOfrane (light grey on the Ice Diver) or Tropic rubber strap
Weight
- Head only
- —
- On bracelet
- —
- On strap
- —
Prices
Variants
| Name | Reference | Dial |
|---|---|---|
| Ice Diver | SYN-29511 | cream and black |
| Black Edition | SYN-31026 | black |
About this entry
73% of key specs known. Missing: thickness, weight, hardening, AR coating.
Steel diver on the 70's Military case with a La Joux-Perret G100 (68-hour power reserve, which Two Broke Watch Snobs links to a Swedish Armed Forces requirement) and an elapsed-time bezel; the Ice Diver launched for 2023 delivery (USD 990 pre-order, USD 1,290 after) and was sold out on 2026-10-30, the Black Edition was in stock. Brand spec list: 42mm, 45mm lug to lug, 316L steel, 37mm unidirectional 120-click bezel with sapphire insert and luminous elapsed-time ring, Super-LumiNova, 300m, LJP G100 "genuine top grade", adjusted in 4 positions, tungsten rotor, date; each version is a limited edition of 1,000. Thickness: the brand gives "12.5mm, case including case back 14.00mm" and Two Broke Watch Snobs 14mm including the bulging caseback, while Worn & Wound measured the same case at 14.7mm on the 70's Military; none says whether the crystal is included, so it is left blank. Screw-down crown per Two Broke Watch Snobs; lug width and sapphire crystal from the shared 70's Military case (Worn & Wound). Synchron's Ti300M pages call the Black Edition "steel with PVD coating", but its product photos show an uncoated steel case with a black dial; not recorded as coated.
Last verified: 2026-10-30. Edit or correct this entry.
Sources
- Synchron Poseidon Ice Diver (product page, specifications) accessed 2026-10-30
- Synchron Poseidon Black Edition (product page, specifications) accessed 2026-10-30
- Two Broke Watch Snobs, Synchron Poseidon Ice Diver review accessed 2026-10-30