Description
SEIKO ASTRON NEXTER SBXY101 Compact Titanium Solar Radio-Controlled Watch
The SEIKO ASTRON NEXTER SBXY101 combines the angular, contemporary design of the NEXTER series with a compact 36.0 mm titanium case. Its blue-gray dial, integrated case-and-bracelet profile and slim 8.7 mm thickness create a refined design suited to both business and everyday settings.
The watch is powered by SEIKO's solar radio-controlled Caliber 7B62. It can receive terrestrial standard time signals transmitted in Japan, China, the United States, Germany and the United Kingdom while continuing to operate with quartz accuracy when a signal cannot be received.
Compact NEXTER Design
The SBXY101 carries the established design language of the ASTRON NEXTER series into a smaller and slimmer format. Its sharply defined multi-angular titanium bezel, solid case construction and integrated bracelet form create a modern, streamlined silhouette.
The case measures 42.0 mm in length, 36.0 mm in width and 8.7 mm in thickness. Combined with an approximate weight of 78 g, these compact proportions provide a lightweight alternative to larger ASTRON models.
Blue-Gray Crystal-Pattern Dial
The blue-gray dial features a precise crystal-box pattern that gives the surface a structured, three-dimensional appearance. Multi-faceted indexes and three-faceted hour and minute hands reflect light from different angles, complementing the compact case with a detailed and contemporary design.
A sapphire crystal protects the dial. SEIKO's Super Clear Coating is applied to reduce reflections and support clear viewing from different angles.
Solar Radio-Controlled Caliber 7B62
The SBXY101 is powered by SEIKO Caliber 7B62, a solar quartz movement that converts light into electrical energy. When fully charged, the movement operates for approximately nine months under normal conditions or approximately two years when the power-save function is activated.
The watch can automatically or manually receive compatible terrestrial standard time signals. Radio reception is supported in Japan, China, the United States, Germany and the United Kingdom. Signal reception depends on the selected time difference, location, buildings, weather and other reception conditions.
When a standard time signal cannot be received, the watch continues to operate with an average monthly accuracy of ±15 seconds.
Automatic Time and Calendar Functions
Caliber 7B62 includes automatic signal reception, manual signal reception, reception-result display, time-difference adjustment and automatic hand-position correction. Its full-auto calendar is programmed through December 31, 2099.
The movement also includes quick-start, overcharge-prevention and power-save functions. When traveling, the appropriate time difference must be selected manually; the watch does not automatically detect its geographic location.
Lightweight Titanium Construction
The case and bracelet are made from pure titanium and protected by SEIKO's DiaShield surface treatment. This combination provides a lightweight exterior with enhanced resistance to everyday scratches.
The titanium bracelet is fitted with a push-button three-fold clasp and a smart-adjuster mechanism. The mechanism allows fine adjustment of the bracelet fit without removing links. The maximum compatible wrist circumference is approximately 188 mm.
Practical Everyday Performance
The SBXY101 has enhanced water resistance for daily use at 10 bar and confirmed magnetic resistance. Its lightweight titanium construction, automatic time correction, date display and long solar operating period provide practical performance for regular use.
The exterior is also identified by SEIKO as resistant to metal allergies. Individual sensitivity can vary depending on the wearer and conditions of use.
Japanese Domestic Market Model
SBXY101 is a model number released for the Japanese domestic market. Its JDM designation describes the intended sales market and is separate from its confirmed country of manufacture. This model is manufactured in Japan.
The SBXY101 uses terrestrial standard radio signals for time correction. It should not be confused with ASTRON models equipped with GPS Solar technology.
Key Highlights
- Japanese domestic model: SBXY101
- ASTRON NEXTER compact-size design
- Blue-gray dial with crystal-box pattern
- Multi-faceted indexes and three-faceted hour and minute hands
- Pure titanium case and bracelet
- SEIKO DiaShield surface treatment
- Compact 36.0 mm case width
- Slim 8.7 mm case thickness
- Lightweight construction at approximately 78 g
- Solar radio-controlled Caliber 7B62
- Standard time-signal reception in five regions
- Approximately nine months of operation when fully charged
- Approximately two years of operation with power save activated
- Full-auto calendar through December 31, 2099
- Sapphire crystal with Super Clear Coating
- Smart-adjuster clasp mechanism
- Enhanced water resistance for daily use at 10 bar
- Made in Japan
Product Specifications
| Brand / Collection | SEIKO ASTRON |
|---|---|
| Series | NEXTER |
| Model | SBXY101 |
| Market | Japanese Domestic Market |
| Country of Manufacture | Japan |
| Edition | Regular production model |
| Watch Type | Solar radio-controlled watch |
| Display | Analog |
| Dial Color | Blue-gray |
| Dial Design | Crystal-box pattern with multi-faceted indexes and three-faceted hour and minute hands |
| Case Dimensions | 42.0 × 36.0 × 8.7 mm (length × width × thickness) |
| Weight | Approximately 78 g |
| Case Material | Pure titanium |
| Case Coating | DiaShield |
| Bezel | Multi-angular titanium bezel |
| Crystal | Sapphire crystal |
| Crystal Coating | Super Clear Coating |
| Band / Bracelet | Pure titanium bracelet |
| Clasp | Push-button three-fold clasp with smart-adjuster mechanism |
| Compatible Wrist Size | Up to approximately 188 mm |
| Metal Allergy Resistance | Yes |
| Water Resistance | Enhanced water resistance for daily use at 10 bar |
| Magnetic Resistance | Yes |
| Movement Type | Solar radio-controlled quartz |
| Caliber | 7B62 |
| Jewels | 6 |
| Operating Time | Approximately nine months when fully charged; approximately two years with power save activated |
| Accuracy | Average monthly rate of ±15 seconds when not receiving a radio signal |
| Radio Reception | Receives standard time signals in Japan, China, the United States, Germany and the United Kingdom |
| Calendar | Date display and full-auto calendar through December 31, 2099 |
| Functions | Automatic reception, manual reception, reception-result display, time-difference adjustment, automatic hand-position correction, quick start, overcharge prevention and power save |
| Release Date | November 8, 2025 |
| JAN Code | 4954628471451 |