The DG2813 (often called the Mingzhu 2813 or Dixmont DG2813) is an affordable, Chinese-made mechanical automatic watch movement widely used in budget timepieces and custom watch mods. [1, 2, 3, 4, 5]
Key Specifications
- Type: Self-winding automatic movement with hand-winding capability [1]
- Jewels: 21 or 22 jewels [1]
- Frequency: 21,600 vibrations per hour (6 beats per second / 3 Hz) [1]
- Power Reserve: Approximately 36 hours [1]
- Functions: Three hands (hours, minutes, sweep seconds) with a date complication at the 3 o'clock position [1]
- Hand Sizes: Standard 150/100/16 (hour / minute / seconds) [1]
Compatibility & Replacement
- Miyota 8215 / 821A: The DG2813 is heavily modeled after and often used as a direct or functional substitute for the Japanese Miyota 8215 family. [1, 2]
- Hands & Dials: It generally accepts hands and dials designed for the Miyota 8215, though stem adjustments or date-wheel alignments may be required depending on the specific watch case and dial layout. [1]
Performance and Reliability
- Cost & Quality: Retailing cheaply (often around $10 to $20 USD / $30–$50 AUD online), it is a popular entry point for hobbyists learning watch assembly and movement servicing.
- Reliability: Opinions and user experiences vary widely. While some units run for years without issue, others suffer from inconsistent quality control, rough factory lubrication, or rotor/winding-assembly quirks that make it feel more like a disposable movement rather than a long-term investment.
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