Miyota 8315 Movement (With Date Function)

Key specifications:

• Up to 60+ hours power reserve (a considerable upgrade from 8215's 42-hour power reserve). This means you can take your watch off for the whole weekend and your watch will still be running on Monday.
• Hack-second or stop-second feature allows you to set the time precisely
• BPH : 21600
• Accuracy : -20~+40 sec per day (you can regulate it to a much better accuracy with this video guide!)
• 21 Jewels
• Heat blued steel screws decoration
• Côtes de Genève movement backside finish
• Function: 3 Hands, Automatic and hand winding (With date function)