**Product Specifications:**
Brand: Bestdon
Model: MOTION MECHANICAL WATCH
Color: Cool Black
Features: Multi-function, luminous, automatic
Functions: Time, calendar, week, month, 24-hour indication, day/night display, moon phase
Material: Synthetic sapphire mirror, stainless steel
Coating: Three-layer vacuum plating, black electroplating
Thickness: 5-8UM
Water Resistance: 100m
Movement: 21-jewel automatic mechanical movement
Clasp: Butterfly double press
Exhibition Case Back: Hollow design
Additional Features: Tachymeter, luminous hands, scratch-resistant
Certification: CE, RoHS
Awards: Guangzhou Well-Known Brand
Global Presence: Sold in over 50 countries worldwide
Exhibition History: Shenzhen International Watch Fair, Baselworld, Hong Kong Watch & Clock Fair
Sales Network: Extensive offline counters and authorized dealers
Warranty: Manufacturer's warranty
Designed by Bestdon, All Rights Reserved
**Note:** Due to variations in the movement batches, the functions of the month and week adjustment buttons may vary. Please refer to the actual product for specific details. Upgraded hidden buttons are included for adjustment convenience.