Automatic Business O501 

If you're looking for an all-around excellent and versatile watch, the Automatic Business O501 is a top choice. The perfect combination of simplicity, class, and exceptional details make this watch a perfect companion on any occasion. On top of the beautiful design, the watch comes equipped with exquisite automatic movement, 3 ATM water resistance, and Hardlex mineral glass. The soft genuine leather band feels comfortable on the wrist. If you are looking for a simple watch with a clear representation of time that doesn't require a battery to work, the Automatic Business O501 series is definitely for you.

• 1 Year international warranty
• No battery needed 
• Water resistance: 3 ATM
• Weight: 94g
• Power reserve: 32 hours
• Dial diameter: 41mm 
• Case material: Stainless steel 
• Case thickness: 12mm 
• Time accuracy: /- 15 seconds a day 
• Window material: Hardlex mineral glass 
• Movement: Automatic self-wind 
• Band material: Genuine leather 
• Band width: 20mm 
• Band length: 24cm 

Maintenance of a hand wind watch

The Automatic Business O501 is an automatic self-wind mechanical watch, which means that it doesn't require a battery. Hand-wound watches need to be winded before use. After the first winding, the watch will keep moving and winds itself automatically from natural hand movement if used at least 8 hours during the day. 

How to wind a hand-wound watch? 

1. Pull out the crown
2. Screw the crown anti-clockwise to the current time
3. Push the crown back
4. Turn the crown clockwise until you feel the resistance (about 10-15 rounds)

Stop winding the watch when you feel the resistance. If you overwind the watch, the spring might break.