Smartwatches have evolved dramatically in recent years. They've become so popular that they're not just used by gadget enthusiasts, but by seniors too, using them to manage their health. Casio's smartwatches, in particular, are so functional that they're favored by professional athletes. In this article, we'll introduce Casio's unique features, recommended collections, and models.

Features of Casio smartwatches
While all smartwatches may look the same, each brand has its own unique features and functions. Let's start by looking at the four features of Casio's smartwatches.
smartphone link
As the name suggests, "Smartphone Link" is a function that connects the watch to a smartphone. When the watch is connected to a smartphone via Bluetooth, the time is automatically corrected four times a day. When crossing time zones, such as when traveling abroad on a business trip, the local time can be displayed with just one push of a button.
In addition, watch functions such as setting alarms and timers can be controlled from a smartphone, freeing users from the hassle of having to configure the watch itself, allowing for smooth operation.
Solar charging (Tough Solar)

Equipped with a "solar charging" system called Tough Solar, it absorbs sunlight as well as even faint light from fluorescent lamps and converts it into power. Six solar films are connected together to ensure even light reception. When used in conjunction with a rechargeable battery, it ensures stable operation of all smartwatch functions.
Mobile link function

The "Mobile Link" function is similar to the Smartphone Link function. Using a system called the "Accurate Time System," time servers around the world are accessed via the smartphone.
By connecting to a dedicated mobile app, the smartphone receives GPS satellite signals and sends the current latitude and longitude information to the watch. It also has a variety of functions that are useful for outdoor activities such as hiking and camping, such as calculating sunrise and sunset times.
Wear OS by Google (OS included)

"Wear OS" is an operating system that is compatible with both Android and iPhone. By pairing it with a smartphone, you can check and reply to messages, emails, and incoming calls received on your smartphone. In addition, you can reply, like, and retweet on Twitter.
Other convenient features that fit into daily life include contactless payment using Google Pay, navigation functions, and health management using health apps.
Recommended collection of smartwatch features
Casio offers a wide range of functional watches, including the classic G-SHOCK. Here we will introduce three collections that excel as smartwatches.
Casio "G-SQUAD"
The G-SQUAD collection is designed specifically for sports, delivering excellent performance for gym and indoor training, as well as outdoor workouts and running.
They are highly durable, with shock resistance and waterproofing, and each model comes equipped with a variety of functions that are useful for training, such as heart rate monitors and distance measurement. The wide range of models available allows you to choose one that suits your situation and purpose.
Casio "G-LIDE"
The G-LIDE collection is specifically designed for marine sports, and displays a variety of information, including a tide graph that shows the ebb and flow of the tides, moon data that indicates the ebb and flow of the tides, tide times and levels, and sunrise and sunset times.
The wide screen provides excellent visibility, and the watch is also water-resistant to 20 bar. Its high level of performance makes it a favorite among professional surfers. The simple design, typical of G-SHOCK, makes it a comfortable watch for city wear as well.
Casio "PRO TREK"
The PRO TREK collection is designed specifically for outdoor activities. In addition to measuring altitude, air pressure, direction, temperature, and steps, it also features a wide range of outdoor-focused functions, including moon data, tide graphs, and fishing time based on the direction and phases of the moon.
With a water resistance of 20 ATM, this watch is tough enough to withstand water activities such as river fishing, sea fishing, kayaking, and rafting. It also features Casio's unique solar charging system, "Tough Solar," as well as a highly shock-resistant movement, making it suitable for the toughest outdoor adventures.
