Surfrider Foundation Japan Limited Edition | Bluetooth & MIP LCD

The Casio G-Shock GBX-100SFJ-1JR is a limited-edition JDM (Japanese Domestic Market) model born from a collaboration with the Surfrider Foundation Japan. This model combines a minimalist design in solid black with cutting-edge technology for surfers and marine conservation enthusiasts, standing out for its construction using eco-friendly biomass plastics.

🌟 Key Features and Exclusive Attributes

• Exclusive JDM Edition: Imported directly from the Japanese market; a highly sought-after collector’s item.
• Core Sustainability: Bezel and strap made from biomass plastics derived from renewable organic resources.
• Premium Visibility: High-contrast MIP LCD display, readable even in the most intense direct sunlight.
• Phosphorescent Details: Bezel elements with luminescent paint for optimal visibility in the dark.
• Surfrider Identity: Discreet logo integrated into the paint and the #oceanfriendlylifestyle slogan printed on the lugs.

📊 Technical Specifications

Feature Detail

Case Dimensions $50.9 \times 46.0 \times 14.7$ mm

Weight 66 grams

Bezel / Case Material Biomass Resin and Stainless Steel (with Black IP Finish)

Strap Soft Biomass Urethane (Adjustment: 145 - 215 mm)

Crystal Highly Resistant Inorganic Mineral Glass

Water Resistance 200 meters (20 ATM / ISO Divers standard)

Durability Shock Resist Structure (Resistant to extreme impacts)

Power Source CR2032 battery (Approx. 2-year battery life)

🌊 Special Features for Surfing and Sports

• Tide Chart and Lunar Data: Tide settings for approximately 3,300 global locations. Displays 3-stage tide cycles and moon phases.
• Sunrise / Sunset: Sunrise and sunset times for 50 preset locations or user-defined coordinates.
• Activity Monitor (LCD MIP): Step count, distance, pace, speed, and calories burned via a 3-axis accelerometer. Memory for 100 runs (up to 140 laps per run).

📱 Bluetooth & Mobile Link Connectivity

Sync the watch with your smartphone using the official CASIO app to access:

• Automatic Time Adjustment: Accurate time correction anywhere in the world.
• World Time: Quick access to 38 time zones (38 cities + UTC).
• Smart Notifications: On-screen alerts for incoming calls, emails, social media, and calendar alerts with vibration function.
• Phone Finder: Locate your phone by emitting a sound from the watch.

⚙️ Classic Watch Functions

• Lighting: High-intensity LED backlight (Super Illuminator in white) with automatic activation and adjustable duration (1.5 or 3 seconds).
• Interval Timer: Set up to 5 timers in sequence (adjustable from 1 sec to 60 min with automatic repeat).
• Stopwatch: 1-second accuracy up to 100 hours with split time function.
• Alarms: 4 daily alarms with snooze function.
• Other features: Airplane mode, full automatic calendar, 12/24-hour format, sound and vibration on/off, and power-saving mode.

Accuracy Note: When not paired with a smartphone, the watch maintains traditional quartz accuracy with an average deviation of just $\pm15$ seconds per month.