Epson Y121 Movement

Power the heart of your timepiece with the Epson Y121 Watch Movement, a high-precision Japanese quartz movement engineered for reliability and long-lasting performance. Assembled in Japan, this caliber is a versatile industry standard specifically designed to fit and restore Seiko, Lorus, and Pulsar watch cases, ensuring a seamless and ready-to-install solution for watch repairs.

The Y121 is a robust, no-jewel movement that delivers a classic three-hand analog display (hour, minute, and sweep second). Its compact architecture and efficient power consumption provide a steady 3-year battery life, making it an ideal "drop-in" replacement for maintaining your favorite watches.

Key Features

• Japanese Engineering: An authentic Epson® quartz movement, Japanese-assembled for guaranteed accuracy and durability.
• Three-Hand Display: Provides traditional analog timekeeping with a central sweep second hand.
• Compatibility: Designed as a direct fit for various Seiko, Lorus, and Pulsar models.
• Size (Ligne): Measures 6 3/4 x 8 Ligne (15.3 x 18.1 mm).
• Height: Features a movement thickness of 2.99 mm (total height to the top of the sweep second pinion is 4.5 mm).
• Reliable Power: Operates on a standard 377 (SR626SW) watch cell with an approximate 3-year battery life.
• Technical Specs: Includes watch stem (Tap 10); requires hand sizes 1.10 mm (hour), 0.65 mm (minute), and 0.20 mm (second).