The DAVOSA Ternos Professional 68H combines a DAV 3121 automatic movement with a manufacturer-stated 68-hour power reserve and a 30 ATM water-resistance rating. Those details describe a specific configuration, not every watch in the Ternos Professional 68h family: this review focuses on reference 161.538.40, the black-dial model with a stainless-steel bracelet. DAVOSA’s published specifications make it possible to assess what the watch offers on paper, but they are not independent test results.
Which Ternos Professional 68H is this review about?
The product name alone is not enough to identify the configuration. DAVOSA lists multiple references in the Ternos Professional 68h family, including 161.538.40, 161.538.07, and 161.538.05, with differences in color or bracelet configuration. The specifications below apply to reference 161.538.40, as listed on DAVOSA’s product page. Check the reference on the watch or retailer listing before relying on the dimensions, finish, bracelet, or price described here.
What does reference 161.538.40 offer?
DAVOSA lists an automatic DAV 3121 calibre, with hours, minutes, seconds, date, quick date setting, and a seconds stop. The stated power reserve is up to 68 hours. DAVOSA says the base calibre is supplied by La Joux-Perret; this identifies the movement’s stated origin, not an independent assessment of its accuracy or performance.
The case is stainless steel, with a black dial, applied indices, sapphire crystal with anti-reflective treatment, and a unidirectional rotating high-tech ceramic bezel. DAVOSA describes the ceramic insert as having a hardness of 1250 HV. The dial indices use Super-LumiNova BGW9, according to the manufacturer. These material and lume descriptions are published specifications, not results from hands-on testing.
Recommended Free Tools
#1 Best Overall
- Stainless Steel case with Black Resin Band
- Black Dial with date window at 3 O'clock
- Luminous markers and hour hands; sweep second hand
- Anti-reverse bezel
- Water-resistant to 200 M (660 feet)
| Specification | Reference 161.538.40 |
|---|---|
| Movement | Automatic DAV 3121 |
| Functions | Hours, minutes, seconds, date, quick date setting, and seconds stop |
| Power reserve | Up to 68 hours, as stated by DAVOSA |
| Water resistance | 30 ATM, as stated by DAVOSA |
| Case dimensions | 42.0 mm wide, 12.8 mm high, 50.5 mm long |
| Lug size | 22.0 mm |
| Weight | 210.0 g |
| Crystal | Sapphire with anti-reflective treatment |
| Bezel | Unidirectional rotating ceramic |
| Bracelet and clasp | Stainless-steel TriaLink bracelet; WaveSlide clasp with micro-adjustment and push-button release |
Dimensions and weight in this table are DAVOSA’s published figures for reference 161.538.40. They are useful for comparing listings or planning a try-on, but they do not establish how the watch will fit or feel on a particular wrist.
How should you interpret its dive-watch specifications?
DAVOSA lists 30 ATM water resistance, a screwed crown, and a screwed case back for this reference. That is a manufacturer rating, not confirmation that a particular used or stored example remains water-resistant. A rating on a product page cannot tell you the condition of an individual watch’s seals or whether it has passed a recent pressure test. If you plan to use a specific watch in water, check its service history and have its water resistance verified by a qualified watch service provider.
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.
The unidirectional ceramic bezel and luminous indices are also stated features, not evidence of hands-on performance. The available product information does not establish bezel action, legibility in particular conditions, lume duration, or real-world timing accuracy.
What do the power reserve and La Joux-Perret connection mean?
The 68-hour figure is DAVOSA’s stated maximum power reserve for the DAV 3121. In practical terms, the manufacturer’s specification means the watch is designed to continue running for up to that interval after being fully wound, subject to actual use and condition. It is not an independent measurement of an individual watch’s reserve.
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Rank #3
- Waterproof: Water resistant up to 20 ATM / 200 meters / 655 feetWaterproof: Water resistant up to 20 ATM / 200 meters / 655 feet
- Luminous: Luminescent hands and hour markers, excellent night brightness
- Features: Japanese quartz movement, no need hand winding, unidirectional rotating bezel, premium 316L stainless steel, mineral crystal glass with protruding magnifying glass, screw-in crown, double safety buckle
- Size: 41 mm case diameter, 48 mm lugs to lugs length, 13 mm thickness, 20 mm lug width, 163g weight. Fits wrists up to 8.5 inches, great fit for a variety of wearing needs
- Usage Care: Keep 3+ inches from phones, speakers, microwaves – strong magnetic fields disrupt movement. Avoid prolonged exposure to extreme temperatures. Prevent hard impacts/vibrations
DAVOSA says the calibre is based on a La Joux-Perret movement and describes the Ternos Professional as marking the start of its collaboration with that Swiss manufacturer. The source does not identify a named speaker for the statement, and the product information alone does not support broader conclusions about servicing, reliability, or comparative movement quality.
What is the listed price and availability?
When retrieved in 2026, DAVOSA’s European page for reference 161.538.40 displayed a price of €1,395 including tax, showed the model as in stock, and gave a 3–5 day delivery estimate. Those are observations from that regional page at that time—not a current quote, a market average, or a promise of availability. Check the product page and applicable local terms before buying.
Rank #4
- Iconic Promaster watches with advanced functions designed to venture to the deepest depths.
- An Eco-Friendly Evolution: Citizen launches first Titanium Watch in 1970. More than 50-year-old evolution of innovative timepieces crafted from proprietary space-age material.
- Benefits of Super Titanium: Lightweight for Better Comfort, Scratch Resistant, Gentle on Skin, and Rust Resistant. Five times harder and 40% lighter than stainless steel.
- Luminous Hands and Markers and Mineral Crystal
- 200 Meters Water Resistant and 5 Year Limited Warranty, ISO Compliant
Who should consider the Ternos Professional 68H?
Reference 161.538.40 may suit a buyer looking for a steel automatic watch with a black dial, ceramic bezel, date function, and a manufacturer-stated 68-hour reserve. Its listed 42 mm width, 50.5 mm length, and 210 g weight are especially worth checking against your fit preferences in person. The figures do not establish comfort, and the available information does not support a comparative verdict on value, accuracy, durability, or dive performance.
Before purchasing, compare the reference number on the watch and listing, confirm the desired dial and bracelet configuration, and check the price and seller-specific warranty or service terms. For a pre-owned example, ask for its service and pressure-test history rather than relying on the model’s original rating.
Free tools Windows power users keep installed
One-click scans. No signup required.
Quick Recap
Best Value
- DIVER-INSPIRED DESIGN — Inspired by the sea, the MDV-106B 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-106B 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.
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.
