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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteThe Unimatic Modello Uno U1S-PD3 and U1S-PD5 are closely related automatic dive watches. Their clearest differences are the stated water-resistance ratings—300 m for the PD3 and 500 m for the PD5—and crystal thickness: 2.5 mm versus 3 mm. Both share a 40 mm case, Sellita SW200-1 b movement, ceramic bezel insert, and two included straps.
What differs between the U1S-PD3 and U1S-PD5?
| Specification | U1S-PD3 | U1S-PD5 |
|---|---|---|
| Stated water resistance | 300 m / 1,000 ft / 30 atm | 500 m / 1,666 ft / 50 atm |
| Crystal | 2.5 mm double-domed sapphire, inner anti-reflective coating | 3 mm double-domed sapphire, inner anti-reflective coating |
| Listed case thickness | 11.6 mm | 12 mm |
| Reported launch price | €1,100 excluding taxes | €1,200 excluding taxes |
The specifications are from UNIMATIC’s U1S-PD3 technical sheet and U1S-PD5 technical sheet. Fratello reported the prices at launch on October 5, 2023; they are historical, exclude taxes, and should not be read as current retail prices. Current pricing and stock need confirmation with a retailer. [Fratello Watches]
What the two watches share
Case, bezel, and dimensions
Both use a brushed 316 stainless-steel case measuring 40 mm, with a 41.5 mm bezel diameter, 49 mm lug-to-lug length, and 22 mm lug spacing. Each has a 120-click unidirectional safety bezel with a matte black ceramic insert and luminous markers.
Movement and power reserve
Each is powered by an automatic Sellita SW200-1 b with 26 jewels, a frequency of 28,800 beats per hour, hacking seconds, and hand-winding. UNIMATIC lists a minimum 38-hour and typical 41-hour power reserve on both sheets. The brand’s movement reference page also identifies the caliber: UNIMATIC movement reference.
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- Classic Style: rotatable bezel function with 120° unidirectional rotation, Japanese quartz movement with date function, enlarged date window at 3 o'clock, rotatable bezel, can be used as a chronograph or second time zone timer.
- Dimensions: Case Diameter: 41 mm; Case Length: 48 mm; Case Thickness: 13 mm; lugs width : 20 mm; Watch weight: 163 g; Watch length: 220 mm
- Detailed Components: screw-down crown, mineral glass dial window, stainless steel bracelet, adjustable bracelet (included tool to remove the bracelet links), security folding
- 200M Waterproof: It can protect your watch, you can use it underwater in rainy days with peace of mind
- Easy to Read Face :Simple dial design, easy to read the time, with luminescent function, the time can be clearly seen in the dark place
Dial, straps, and edition
The models share a matte black diver dial with white and orange Super-LumiNova details, black ladder-style hour and minute hands, and a reverse-lollipop seconds hand. Both are individually numbered in editions of 500, made in Italy, and covered by a two-year warranty. The package includes a charcoal grey TPU two-piece strap, a charcoal grey seatbelt NATO strap, and a tough case with a warranty card bearing a unique ID seal.
How to interpret the water-resistance ratings
The manufacturer specifies the PD3 at 300 m / 30 atm and the PD5 at 500 m / 50 atm. Both technical sheets say each watch is “Singularly tested for accuracy and water resistance.” These are manufacturer specifications, not a guarantee that a particular watch is suitable for a particular dive. Intended use, condition, maintenance, and the requirements of the dive matter; consult the manufacturer or a qualified watch service professional if you need to establish suitability.
Rank #2
- DIVER-INSPIRED DESIGN — Inspired by the sea, the MDV-106G is styled after classic dive watches and delivers 200-meter water resistance at an unbeatable price point. The black resin band and stainless steel case give it a classic look, while the anti-reverse rotary bezel adds authentic dive-watch character.
- STAINLESS STEEL CASE WITH SCREW-LOCK CROWN & CASEBACK — The MDV-106G features a stainless steel case and a reliable screw-lock crown for enhanced water resistance protection. Screw-down crown and screw-lock caseback work together to keep the movement sealed and secure during water activities — a construction standard found on dive watches far above this price range.
- LARGE FLUORESCENT HANDS & INDICES FOR INSTANT READABILITY — The dial features hands and hour indices with large fluorescent areas for easy reading in low-light and underwater conditions. The clean 3-hand analog layout with date display at 3 o'clock keeps the dial uncluttered and immediately legible at a glance.
- 44MM STAINLESS STEEL CASE | 22MM LUG WIDTH | MINERAL GLASS — The case measures 44mm in diameter, 12mm in height, with a 49mm lug-to-lug length and a standard 22mm lug width — making strap upgrades effortless with a vast range of aftermarket options. Mineral glass protects the dial from everyday scratches and impacts.
- 3-YEAR BATTERY & 200M WATER RESISTANCE — Powered by an SR626SW battery with an approximate 3-year life, the case measures 49.5 × 46.3 × 12.1mm and weighs 92 grams. At 200 meters of water resistance, the Duro is versatile and suitable for all situations — whether in the water, hiking, running, or at the office.
Which one should you choose?
- Choose the PD3 if its stated 300 m rating meets your needs and you prefer the thinner listed case and crystal, or the lower of the two reported launch prices.
- Choose the PD5 if you want the higher stated water-resistance rating and thicker sapphire crystal.
Beyond those distinctions, the specifications are notably alike: the same case diameter, movement, bezel construction, strap width, package straps, and edition size. Confirm current availability and price directly with a seller, since the launch figures do not establish present-day stock or cost.
Quick Recap
Best Value
- Stainless-steel - The stainless-steel case and bracelet are resistant to corrosion, rust, and daily wear and tear.
- Date Window - Easily track the date in a magnified window beside 3 o'clock.
- Enhanced Visibility - Luminant hands and hour markers ensure readability in low-light conditions.
- Dive-inspired Style - Polished yet rugged, this watch is reinforced with a sturdy crown protector and features a black rotating bezel.
Rank #4
- ST2130 Automatic Mechanical Movement-Equipped with SEA-GULL ST2130 self-winding movement, 28 jewels, 28800 bph high frequency, delivers stable and accurate timekeeping. No battery needed, winds automatically with wrist movement.
- 300M Professional Dive Waterproof-30 Bar (300m/1000ft) water resistance, supports swimming, snorkeling and recreational diving. Unidirectional rotating bezel for precise dive time tracking.
- 316L Steel & Sapphire Crystal Build-44mm 316L stainless steel case with excellent corrosion resistance. Scratch-proof synthetic sapphire crystal, paired with 22mm breathable nylon strap.
- Luminous Display & Dragon-Scale Design-Full luminous hands and markers for clear reading in dark/underwater. 3 o'clock date window, unique dragon-scale dial with oriental aesthetic for daily & business wear.
- Trusted Brand-Genuine SEA-GULL mechanical watch with mature craftsmanship. For men and watch enthusiasts.
Rank #3
- Solar powered quartz movement helps reduce frequent battery replacement.
- 300M water resistant design supports swimming, snorkeling, diving, and water sports.
- Luminous hands and markers improve readability in dark or low-light conditions.
- Durable case and mineral glass are built for outdoor and everyday wear.
- WATCH SIZE & WRIST FIT: Features a 45.8 mm (1.80 in) case diameter and a 51.4 mm (2.02 in) lug-to-lug length. The adjustable 24 mm silicone strap accommodates wrists up to 230 mm (9.1 in). Measure your wrist and check the case dimensions before ordering, especially if you have a smaller wrist.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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