ADDIESDIVE Men's Automatic Mechanical Watch Sapphire Glass Super Luminous 200M Waterproof 316L Stainless Steel Leisure Man Watch vs STEELDIVE Men GMT Watch 40mm Automatic Mechanical Wristwatch 20ATM Waterproof Sapphire Mirror 4 Hands NH34 Date
This is an in-depth, head-to-head comparison of two popular, value-driven mechanical watches from the 'Chinese microbrand' category: the ADDIESDIVE dive watch and the STEELDIVE GMT watch. The core difference lies in their function and movement.
Head-to-Head: ADDIESDIVE Diver vs. STEELDIVE GMT
| Feature | ADDIESDIVE Men's Automatic Mechanical Watch Sapphire Glass Super Luminous 200M Waterproof 316L Stainless Steel Leisure Man Watch | STEELDIVE Men GMT Watch 40mm Automatic Mechanical Wristwatch 20ATM Waterproof Sapphire Mirror 4 Hands NH34 Date |
|---|---|---|
| Primary Function | Standard Dive Watch (Dive Timing) | Travel Watch (Tracking Multiple Time Zones) |
| Movement | Seiko NH35 Automatic (3-Hand w/ Date) | Seiko NH34 GMT Automatic (4-Hand w/ Date) |
| GMT/24-Hour Hand | No (Standard 3-hand time) | Yes (Dedicated 24-hour hand) |
| Case Diameter | Approx. 40mm | Approx. 40mm - 40.5mm |
| Water Resistance | 200M (20ATM) | 200M (20ATM) / Some variants may be 300M |
| Crystal | Domed/Curved Sapphire Crystal with AR Coating | Sapphire Crystal with AR Coating (often with a Cyclops date magnifier) |
| Bezel | Unidirectional (120-Click) Ceramic Dive Bezel | Bi-directional 24-Hour Ceramic or Sapphire Bezel |
| Lume Type | Swiss C3 Super Luminous (Yellow-Green) | Swiss BGW9 Super Luminous (Blue) |
| Lug-to-Lug | Approx. 46mm | Approx. 47.5mm |
| Price Range (Approx.) | Typically lower (varies greatly on sales) | Typically higher due to the GMT movement |
Note on Pricing and Models: The Addiesdive model is frequently identified as the MY-H9 (a dive watch). The Steeldive GMT models are commonly the SD1992, SD1993, or SD1994, which share the core specifications of the NH34 movement and GMT functionality. Pricing is dynamic on retail platforms.
In-Depth Feature Comparison
1. Core Functionality (The Main Difference)
| ADDIESDIVE Diver | STEELDIVE GMT |
|---|---|
| A pure dive watch. The unidirectional (one-way rotating) ceramic bezel is designed to measure elapsed time, crucial for monitoring oxygen levels during a dive or timing any activity for up to one hour. It's a functional "tool watch" focused on ruggedness and legibility. | A true travel watch. The central fourth hand (the GMT hand) moves once every 24 hours and points to a second time zone indicated on the bi-directional 24-hour bezel. This allows the wearer to track local time, home time (GMT), and a third time zone if the bezel is rotated. |
| Winner: STEELDIVE GMT for versatility and complexity. |
2. Movement
Both movements are made by Seiko Instruments (SII), known for their reliability and robustness at an affordable price point.
- ADDIESDIVE Men's Automatic Mechanical Watch Sapphire Glass Super Luminous 200M Waterproof 316L Stainless Steel Leisure Man Watch: Seiko NH35
- Pros: Extremely reliable, easily serviceable, features hacking (seconds hand stops when setting time) and hand-winding. A workhorse movement.
- Cons: Basic functionality (only time and date).
- STEELDIVE Men GMT Watch 40mm Automatic Mechanical Wristwatch 20ATM Waterproof Sapphire Mirror 4 Hands NH34 Date: Seiko NH34
- Pros: Adds the complication of an independent 24-hour GMT hand, a significantly more complex function than the NH35. It also features hacking and hand-winding.
- Cons: It is a "caller" or "office" GMT, meaning the 24-hour hand is quickset, while the main hour hand is not. This is typical for this price point.
| Movement Verdict: STEELDIVE GMT wins due to the added complexity and utility of the NH34 GMT movement. |
3. Case, Crystal, and Construction
Both watches offer exceptional construction for the price bracket, utilizing the industry-standard 316L Stainless Steel and scratch-resistant Sapphire Crystal.
| ADDIESDIVE Diver | STEELDIVE GMT |
|---|---|
| Often features a highly domed or curved sapphire crystal, giving it a retro or vintage aesthetic. | Tends to have a flatter or slightly domed sapphire crystal, often featuring an added Cyclops date magnifier over the date window. |
| The unidirectional ceramic bezel is dedicated to dive timing. | The bi-directional 24-hour bezel is essential for the GMT function, allowing easy calculation of the third time zone. |
| Water Resistance: 200M (20ATM), standard for recreational diving. | Water Resistance: 200M (20ATM) is the standard for the NH34 models, also suitable for diving and swimming. |
| Construction Verdict: Tie. Both offer premium materials (316L steel, Sapphire, Ceramic) and excellent water resistance. The choice depends purely on aesthetic preference (curved crystal on the Addiesdive vs. Cyclops/flatter crystal on the Steeldive). |
4. Lume and Legibility (Super Luminous)
Both brands are famous for using powerful Swiss Super-LumiNova compounds, but they often use different colors.
- ADDIESDIVE Men's Automatic Mechanical Watch Sapphire Glass Super Luminous 200M Waterproof 316L Stainless Steel Leisure Man Watch: Utilizes Swiss C3 Super Luminous, which emits a bright, traditional yellow-green light. It is often described as having a "retro" or "vintage" look in daylight.
- STEELDIVE Men GMT Watch 40mm Automatic Mechanical Wristwatch 20ATM Waterproof Sapphire Mirror 4 Hands NH34 Date: Typically uses Swiss BGW9 Super Luminous, which glows blue in the dark. It is pure white in daylight. BGW9 is often considered slightly "fancier" and has excellent initial brightness.
| Lume Verdict: Tie. Both use high-quality Swiss lume. The choice is purely down to color preference (classic green/C3 vs. modern blue/BGW9). |
Conclusion: Who Should Buy What?
The decision between these two watches comes down to functionality versus cost/purity of design.
Buy the ADDIESDIVE Men's Automatic Mechanical Watch Sapphire Glass Super Luminous 200M Waterproof 316L Stainless Steel Leisure Man Watch if:
- You prioritize a classic dive watch aesthetic. Its design (unidirectional bezel, NH35 movement) is the purest form of the "tool diver."
- You want a slightly lower price point. The simpler NH35 movement typically makes this the more affordable option.
- You prefer the vintage look of the domed sapphire crystal and the bright green C3 lume.
Buy the STEELDIVE Men GMT Watch 40mm Automatic Mechanical Wristwatch 20ATM Waterproof Sapphire Mirror 4 Hands NH34 Date if:
- You are a traveler or frequently deal with multiple time zones. The NH34 GMT movement and 24-hour bi-directional bezel are perfect for tracking a second (or third) time zone.
- You want more technical complexity. The GMT complication is a significant step up from a basic time-and-date movement.
- You prefer the modern look of the blue-glowing BGW9 lume and the functional, bi-directional bezel.
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