**Product Specifications**
**Brand:** CASIO
**Model:** GA-2100 Series
**Movement:** Quartz
**Weight:** Approximately 51g
**Case Size:** 48.5x45.4x11.8mm
**Case Material:** Resin
**Crystal Material:** Mineral Glass
**Strap Material:** Resin
**Water Resistance:** 200M
**Features:**
- Shock Resistant
- Super Double LED Light
- 200 meters waterproof
- Countdown Timer
- World Time
- Stopwatch (1/100 second)
- Full Auto-Calendar
- 24-hour Timekeeping
- Daily Alarm, Hourly Time Signal
- Long Battery Life
- Pointer Dodge
**Product Features:**
- Carbon Core Guard Structure
- 7x harder than iron
- Carbon fiber reinforced resin case
- Lightweight and durable
- Classic octagonal design
- Resistant to shocks and impacts
**Color Display:** Various color options available
**Packaging Includes:**
- Watch x1
- Watch Box x1
- Hang Tag x1
- User Manual x1
**Maintenance and Waterproofing:**
- Water resistance levels: 30m, 50m, 100m, 200m, <300m
- Avoid exposure to hot water, sauna, or extreme temperature changes
- Regularly clean the watch strap and case
- Avoid contact with water, moisture, and cosmetics for leather straps
- Be cautious of magnetic fields and keep the watch away from electronics and magnets
- Do not disassemble the watch yourself
- Avoid impacts and drops to prevent damage
- Do not adjust the date between 10 PM and 2 AM
- Adjust the time by turning the hands clockwise
- Water resistance is not permanent and may degrade over time
- Have the watch checked by an authorized service center every 1-2 years
Please note that specifications may vary slightly due to different production batches and measurement methods.