Casio G-Shock Master Of G-Air Gravitymaster GR-B300RY-1A9JF - men's watch made by Casio. It has Japanese solar quartz movement and 5719 calibre. Carbon (biomass plastic), resin (biomass), stainless steel, ip coating case of round shape. Case dimensions are 54.7 mm. in diameter and 15.7 mm. in thickness. The dial of this Casio watch is black. Display type: analog. This timepiece has mineral glass. Resin (biomass plastic) band, band color: yellow. 200 m. water resistance. The watch is from G-Shock collection. The following features are equipped: bluetooth, world time, screw-down crown, glowing hands, glowing markers, dual time, countdown timer, backlight, perpetual calendar, power reserve indicator, chronograph, alarm, date, day.

Alarm

The Alarm will remind you of repeated events with a beep, which you can set to any time.

Backlight

The backlight is a dial illumination that allows you to use this watch in the dark.

Bluetooth

This watch can be connected to a smartphone or PC using Bluetooth interface.

Chronograph

You can measure the amount of time between two events using this watch.

Countdown Timer

Timer indicates the end of the time period you set.

Dual Time

With this watch you will easily know local time in two time zones on your choice.

Glowing Hands

The hands of this model have a luminous layer that glows in the dark.

Glowing Markers

The markers of this model have a luminous layer that glows in the dark.

Perpetual Calendar

Will automatically show you day, date and month, including leap years until the year 2100.

Power Reserve Indicator

You will always know how much energy your watch has and when it should be charged or winded.

Screw-down Crown

The crown is protected by screwing mechanism, which improves water resistance.

Solar Powered

This watch can be charged from almost any light source and run few months or more in the dark when fully-charged.

Specification

Brand

Casio

Collection

G-Shock

Gender

Men's

Movement

Solar Quartz

Calibre

5719

Case Material

Carbon (biomass plastic), Resin (biomass), Stainless Steel, IP Coating

Case Shape

Round

Case Size

54.7

Case Thickness

15.7

Dial Type

Analog

Dial Color

Black

Band Material

Resin (biomass plastic)

Band Color

Yellow

Water Resistance

200

Glass

Mineral

Features

Bluetooth, World Time, Screw-down Crown, Glowing Hands, Glowing Markers, Dual Time, Countdown Timer, Backlight, Perpetual Calendar, Power Reserve Indicator, Chronograph, Alarm, Date, Day

Case size (L× W× H)

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59 × 54.7 × 15.7 mm

Weight

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71 g

Case and bezel material

Bio-based Carbon / Bio-based resin / Stainless steel

Band

Bio-based resin band

Construction

Shock Resistant

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)