
SYNCHRON Ti300M Poseidon
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TECHNICAL SPECIFICATIONS – SYNCHRON Ti300M Poseidon EDITION EDITION: Limited to 500 pieces worldwide CASE: Titanium Grade 5 Case, Caseback and Bezel, extremely lightweight construction with exactly 50g. Slim Profile: Reduced height of just 11.9mm DIMENSIONS: Case: 41mm diameter, 11.9mm height. Lug-to-Lug: 45mm – Lug Width: 20mm, dial and bezel diameter remain the same like previous Synchron models MOVEMENT: Genuine Swiss-made La Joux-Perret G100, Soigné grade – Adjusted in 4 positions. Type: Automatic – Functions: Hours, Minutes, Seconds WATER RESISTANCE: 300 meters / 990 feet CRYSTAL: Crystal: Flat sapphire – Coating: Triple anti-reflective DIAL: Finish: Semi-glossy – Hour Markers: Applied markers – Lume: Filled with high-density X1 Super-LumiNova BEZEL: Bezel Type: Unidirectional, 120-click – Non-decompression US Navy dive table STRAP: Strap Type: Genuine Tropic® rubber strap DELIVERY: First batch sold out. This is a second batch order that will start shipping October 2026 Synchron Ti300M Poseidon – Modern Titanium, 1970s Dive Watch Heritage The Synchron Ti300M Poseidon is a 41mm Grade-5 titanium dive watch with a sunshine-yellow dial, Swiss La Joux-Perret G100 automatic movement, and 300 meters of dive-rated water resistance. At just 50 grams complete and 11.9mm thick, its a watch you constantly catch yourself admiring – yet one you forget is even on your wrist after the first hour. Limited to 500 pieces worldwide. The watch you forget youre wearing At exactly 50 grams and just 11.9mm thin, the Ti300M Poseidon defies what a 300m dive watch is supposed to feel like. The 41mm case sits flat thanks to a short 45mm lug-to-lug and a slim profile that slides effortlessly under any cuff – dress shirt, suit jacket, or 5mm wetsuit alike. Grade-5 titanium warms to body temperature almost instantly and never feels cold or top-heavy the way a steel diver does after a long day. Paired with the supple genuine Tropic® strap, the result is a watch you actively want to look at, and one comfortable enough to wear from a morning dive straight into a dinner reservation without ever wanting to take it off. The dial: yellow on titanium The sunshine-yellow dial against brushed titanium is the design hook that makes this watch unmistakable. Its a homage to a small number of vintage Swiss dive-watch dials from the late 1960s and early 1970s – yellow was used on some Aquastar and Doxa professional divers precisely because it stays legible at depth where reds and oranges turn black. The Poseidons dial uses X1 Super-LumiNova® on hands and indices – the brightest commercial luminous compound available – so the watch is legible in the dark for a full work shift after charging. The movement: La Joux-Perret G100 Inside, the Ti300M Poseidon runs the Swiss-made La Joux-Perret G100 automatic caliber , finished to Soigné grade – La Joux-Perrets tier between Top grade and chronometer (COSC) certification. Key specs: 60-hour power reserve 4 Hz (28,800 vph) beat rate – smooth seconds sweep Hacking seconds for precise time-setting Automatic + manual wind, bi-directional rotor Adjusted in multiple positions in Switzerland The G100 is a movement that watchmakers respect: robust enough for daily diving, fine enough that the engraved caseback hides nothing to be embarrassed about. Full specifications Edition size : Limited to 500 pieces worldwide Case material : Grade 5 Titanium (case, caseback, bezel) Case diameter : 41mm Lug-to-lug : 45mm Thickness : 11.9mm Weight : ~50 grams (head only) Dial : Sunshine yellow, X1 Super-LumiNova® hands and markers Crystal : Anti-reflective sapphire Bezel : 120-click unidirectional rotating dive bezel Crown : Screw-down Caseback : Screw-down, engraved Water resistance : 300 meters (990 ft) Movement : Swiss La Joux-Perret G100 automatic, Soigné grade Power reserve : 60 hours Frequency : 4 Hz (28,800 vph) Strap : Genuine Tropic® rubber included; optional additional Tropic® or ISOfrane® Packaging : Aluminum dive canister Who the Ti300M Poseidon is for If youve ever wanted a serious Swiss dive watch but found yourself put off by the weight, presence, or seriousness of most steel divers – this is your watch. The titanium construction and yellow dial give the Ti300M Poseidon a personality steel watches dont have. Its a tool watch youll actually wear on a Tuesday morning, not a safe queen waiting for a dive trip. The 41mm case fits wrists from small-medium to large, and the slim 11.9mm profile means it works under cuffs that wouldnt accommodate most dive watches. About Synchron and the Poseidon model The Synchron name first appeared in Swiss watchmaking in 1969, when a group of independent watch brands pooled engineering and distribution to weather the coming quartz crisis. The modern Synchron was revived in 1999 by Rick Marei – also credited with the rebirth of DOXA SUB – with a mission to bring forgotten Swiss dive-watch brands back to life. Today, Synchron designs its own modern collection alongside mainta


