The Technik 4X AS-44 series represents a bold step in watchmaking, merging traditional automatic mechanics with modern solar technology. This hybrid approach aims to reduce environmental impact while offering practical functionality for collectors and enthusiasts. In this article, we explore the AS-44DT Date and AS-44SK Skeleton models, detailing their specifications, design, and the innovative technology behind them.
Hybrid Technology: Automatic Meets Solar
The core innovation of the AS-44 lies in its dual-movement system. Each watch houses two distinct movements: a Japanese automatic caliber and a solar-powered quartz movement. This combination allows the watch to harness energy from both wrist motion and light, providing extended running time and reducing the need for battery replacements.
Movements and Performance
The automatic movement, either a Seiko NH05B with date or a Miyota 6T28, offers a power reserve of approximately 40 hours when fully wound. Its accuracy is rated at -35 to +55 seconds per day, typical for movements in this class. The solar movement, an Epson VS17A, boasts an impressive accuracy of ±20 seconds per month and can run for about six months on a full charge. Together, they enable the display of two different time zones, a useful feature for travelers.
Case and Design
The case measures 44.50 mm in diameter and 11.75 mm in thickness, striking a balance between presence and wearability. Crafted from 316L stainless steel, the case features a unique construction: the lugs are integrated into the case back, which is secured by eight screws. This design not only ensures robustness but also allows a view of the automatic movement's rotor through a glass opening in the case back. The top is protected by a sapphire crystal with anti-reflective coating, ensuring clarity and durability.
Dial, Hands, and Straps
The AS-44DT Date features a black or white dial with dash indices, while the AS-44SK Skeleton offers a view into the movement. Both models come with hands coated in SL/C1 luminous material for low-light visibility. The watches are equipped with a tool-free quick-release spring bar system, allowing easy swapping of the 20 mm straps or bracelets. The AS-44DT is paired with a steel mesh bracelet, while the AS-44SK comes with an IP-black plated mesh bracelet.
Models and Pricing
- AS-44DT Date: Reference AS-44DT.SVSV.BKWH.MSH-20SVSV, with steel mesh bracelet. Price: USD 385.00 (excluding transport, customs, and taxes).
- AS-44SK Skeleton: Reference AS-44SK.BKBK.BKBK.MSH-20BKBK, with IP-black plated mesh bracelet. Price: USD 385.00 (excluding transport, customs, and taxes).
Both models are available for pre-order through a crowdfunding campaign, reflecting Technik 4X's commitment to sustainable watchmaking.
Environmental Impact
By incorporating solar charging and rechargeable titanium-lithium-ion batteries, the AS-44 series reduces reliance on disposable silver-oxide batteries commonly used in quartz watches. This aligns with the growing demand for eco-friendly products and mirrors trends in the automotive industry towards hybrid and electric vehicles.
Conclusion
The Technik 4X AS-44DT and AS-44SK represent an innovative fusion of automatic and solar technologies, offering practicality, sustainability, and a unique design. With their dual time zone capability and robust construction, they appeal to collectors seeking a modern, eco-conscious timepiece.






Technik 4X AS-44 hybrid watch
automatic and solar watch
eco-friendly watches
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