CASIO G-SHOCK GBA-900-4AJF GBA-900-4A Mobile link function 20 bar watch

ELEGANCE AND TECHNOLOGY
G-Shock is a line of watches manufactured by Japanese electronics company Casio, designed to resist mechanical shock and vibration. G-Shock is an abbreviation for Gravitational Shock. The watches in the G-Shock line are designed primarily for sports, military and outdoors-oriented activities; nearly all G-shocks are digital or a combination of analog and digital and have a stopwatch feature, countdown timer, electroluminescent backlight and 200-metres of water resistance.

Product Description

 G-SHOCK has a strong presence in the street scene by fusing with various cultures around the world. It is a sports line that comfortably supports daily training with the concept of urban sports for athleisure.

In terms of functionality, it can be connected to a smartphone via Bluetooth®. By linking with the GPS function of the smartphone, the distance measurement by the accelerometer is corrected. Once corrected, it will be possible to measure the mileage more accurately with the watch alone from the next time.
By linking this distance measurement and running time measurement, in addition to supporting running pace measurement, it is also equipped with an auto trap function that automatically measures the time each time it runs a certain distance. In addition to the conventional step tracker (step count measurement function), interval timer (up to 5 x 20 sets), lap time measurement (up to 45 x 1 run), and calorie consumption measurement, it supports daily training.
In addition, you can check life logs and activity history in cooperation with a dedicated application that is useful for various clock settings and training management, and a newly developed donut-shaped liquid crystal is used for the display. It displays a 5-step exercise intensity graph that visualizes the intensity of the user's movement and the set goal achievement rate, which helps to motivate daily exercise.
Equipped with a super illuminator, considering visibility in dark places. A soft urethane material is used for the band to improve the fit, and a vent hole is provided at the connection part of the band to improve breathability. In addition, even when using multiple functions such as automatic time adjustment by Bluetooth® connection, simple notification function (only notification sound), and step count function on a daily basis, the battery life is about 2 years. I also learned the performance that is useful for my lifestyle. It is a model that is widely useful as a fashion item, from daily health management to strengthening the endurance of running.
Distance measurement correction function linked with the GPS function of the smartphone
Bluetooth® automatic connection
Running measurement function that can measure mileage, speed, pace, and calories burned
Step tracker that automatically measures the number of steps when walking starts
Multi-timer useful for interval training
Training measurement for up to 45 lap memories x 1 run
Training management function (achievement level, history) by dedicated smartphone app
Auto double LED light (super illuminator) that illuminates the dial and liquid crystal
Soft urethane band with excellent wearability
Large vents in the band connection
Achieves a battery life of about 2 years while using the step count and simple notification function (only notification sound) on a daily basis.