The 6300 series was a family of mechanical watch movements from Seiko in the 1980's.

Produced from 1984, the 6300 family was based on the earlier 6100 family. It ran at 21,600 A/h and used an automatic winding mechanism, Seiko's Magic Lever.

<table class="html"> <tr> <th>Winding</th><th>Speed</th><th>Model</th><th>Jewels</th><th>Notes</th> </tr> <tr> <td rowspan=3>Automatic</td><td rowspan=3>21600</td><td>6308A</td><td rowspan=2>17</td><td>Date</td> </tr> <tr> <td>6309A</td><td rowspan=2>Day/date</td> </tr> <tr> <td>6319A</td><td>21</td> </tr></table>

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Description:

• Automatic movement
• Diashock
• Ball bearing rotor

Functions:

• Hours, minutes, central seconds
• Quickset date window
• Optional quickset bilingual day window

Data:

• Diameter 12 ligne (27.0 mm), H 5.35 mm
• 17 or 21 jewels
• 21,600 A/h
• Power reserve 47 Hours

Production period:

• 1984-x

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