Seiko Astron Nexter Solar Radio HAC003J 145th Anniversary Edo Purple Limited Edition Japanese Wristwatch

The Seiko Astron Nexter Solar Radio HAC003J is the compact 36mm model in Seiko's 145th Anniversary third-wave collection — a Japan domestic limited of just 500 pieces, and the only model in the Edo Purple series sized and proportioned for a smaller wrist. At 36.0mm diameter and 8.7mm thick, this is an exceptionally refined case size for a solar radio watch — a technical achievement given the movement it houses. Powered by Solar Radio Caliber 7B62 with radio correction from Japan, China, USA, Germany and the United Kingdom (five countries — one more than the HAD003J), perpetual calendar to 2099, and approximately 9 months' drive time on a full charge. The Edo Purple dial features the same horizontal pattern emboss and vertical gradient as the HAD003J. Pure titanium case with Dia-Shield coating. Mirror-polished centre bracelet links with gold tone. Super Clear sapphire crystal. "LIMITED EDITION" caseback. 10ATM water resistance. Releasing October 9, 2026. *Pre-Order! Estimated release and shipment from October 9, 2026.* Key Features: 36mm x 8.7mm — Exceptionally Slim Solar Radio: At 36.0mm diameter and just 8.7mm thick, the HAC003J achieves a case profile that would be considered elegant for any dress watch — remarkable for a solar radio timepiece. The slim profile is enabled by the Caliber 7B62's refined architecture and is the key differentiator between this model and the larger HAD003J. Horizontal Pattern Edo Purple Dial — Gradient Depth: The same "horizontal pattern" three-dimensional emboss with vertical Edo Purple gradient as the HAD003J, adapted for the 36mm dial. Gold accent logos and mirror-finish centre bracelet links complete the 145th anniversary design language. Solar Radio Caliber 7B62 — 5-Country Radio, 9 Months Drive: Radio correction from Japan, China, USA, Germany and the United Kingdom — one more country than the HAD003J. Approximately 9 months' full charge drive. Perpetual calendar to December 31, 2099. Auto and forced reception. Time difference adjustment. Japan Domestic Limited — 500 Pieces Only: HAC003J is limited to 500 pieces for the Japanese domestic market, making it one of the rarest models in the entire Seiko 145th anniversary programme. Watch Specifications Specification Details Brand Seiko Astron Nexter Model HAC003J Series Seiko 145th Anniversary — Japan Domestic Limited Movement Solar Radio (Caliber 7B62) Jewels 6 Accuracy ±15 sec/month (no reception) Drive Duration ~9 months (full) / ~2 years (power save) Radio Reception Japan, China, USA, Germany, UK Key Functions Perpetual Calendar, Time Difference Adjustment Case Material Pure Titanium (Dia-Shield) / Sapphire (Super Clear Coating) Case Size 36.0mm diameter, 8.7mm thick Weight 78g Band Material Titanium (Smart Adjuster, One-Push Triple Fold) Water Resistance 100m (10ATM) Limited Edition 500 pieces (Japan domestic only) Release Date October 9, 2026 Country of Origin Japan Product File Brand: Seiko Product: Wristwatch Collection: Limited Edition Movement: Solar (Radio) Display: Analog