GR-B300RY-1A9DR

Basic Information

• Case Size: 59 × 54.7 × 15.7 mm

• Weight: 71 g

• Case and Bezel Material: Bio-based Carbon / Bio-based resin / Stainless steel

• Band: Bio-based resin band

• Construction: Shock Resistant

• Construction: Carbon Core Guard structure

• Water Resistance: 200-meter water resistance

• Time Adjustment: Bluetooth: Connects to a smartphone and automatically adjusts the time

• Power Supply and Battery Life: Tough Solar (Solar powered)

Smartphone Link/App Connectivity Features

• Smartphone Link Feature: Mobile link (Wireless linking using Bluetooth®)

• Apps: CASIO WATCHES

• App Connectivity Feature: Auto time adjustment

• Easy watch setting

• Approximately 300 world time cities

• Flight log

• Phone finder

Exterior

• Glass: Mineral Glass

• Crown: Screw Lock Crown

• Surface Treatment: Black ion plated bezel

• Compatible Band Size: 145 to 215 mm

• Other: Neobrite

Watch Features

• World Time: Dual time (Home City time swapping)

• Stopwatch:

  • 1-second stopwatch

  • Measuring capacity: 23:59'59.

  • Measuring modes: Elapsed time, split time

• Timer:

  • Countdown timer

  • Measuring unit: 1 second

  • Countdown range: 24 hours

  • Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)

• Alarm/hourly Time Signal:

  • Daily alarm

• Light:

  • LED light (Super Illuminator)

  • Afterglow

• Light Color:

  • LED: White

• Calendar:

  • Full auto-calendar (to year 2099)

• Energy Saving Feature:

  • Power Saving (hands stop to save power when the watch is left in the dark)

• Battery Display/Alert:

  • Battery level indicator

• Run Time:

  • Approx. battery operating time:

    • 5 months on rechargeable battery (operation period with normal use without exposure to light after charge)

    • 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)

• Accuracy:

  • Accuracy: ±15 seconds per month (with no mobile link function)

• Other Features:

  • Date display

  • Day indicator

  • Regular timekeeping:

    • Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24-hour, day)