G-Shock GM-2100B-3ADR Green Resin Analog-Digital Men's Watch

The G-Shock GM-2100B-3ADR men's watch is a green resin analog-digital timepiece with a 44 mm round case. It suits men who want a durable everyday watch for outdoor use, travel or swimming, and its resin build keeps it light on the wrist.

This green resin men's watch pairs a resin case with a matching resin strap, so the whole watch stays light and comfortable for daily wear. The analog-digital movement shows the time with hands and a digital readout, while the 200 meters water resistance covers swimming and snorkelling. A double LED light helps you read the display in low light, and the alarm, calendar, stopwatch, timer and world time functions add practical tools for work, workouts and travel. The 44 mm round case gives a bold look without feeling bulky on most wrists.

Key features and benefits of the G-Shock GM-2100B-3ADR

• Resin case and strap: The case and strap are both made of resin, a lightweight material that resists knocks and daily wear. That keeps the watch comfortable on the wrist and reduces the weight you notice during long use.
• Analog-digital movement: The movement combines traditional hands with a digital display. You can glance at the hands for the time or use the digital readout for extra detail.
• 44 mm round case: The round case measures 44 mm across. That mid-size shape fits most wrists while still giving the watch a bold look.
• Green colour: The case and strap come in a green shade. It gives the watch a modern, casual look that stands apart from plain black or metal designs.
• 200 meters water resistance: The watch is rated to 200 meters water resistance. That level is suitable for swimming and snorkelling, plus everyday contact with water.
• Double LED light: Two LED lights illuminate the watch for reading in low light. You can check the time in a dark room or at night without another light source.
• Alarm: A built-in alarm sounds at the time you set. It helps you keep to a schedule without checking your phone.
• Calendar: The calendar shows the date alongside the time. You can check the day without opening another app.
• Stopwatch and timer: The stopwatch and timer measure set periods. They are useful for workouts, cooking or timing a task.
• World time: World time lets you check the time in different time zones. It is handy when you travel or coordinate with people abroad.
• 1 Year International Warranty: The watch carries a 1 Year International Warranty for manufacturing defects. That gives you a stated period of cover if a build fault appears.

Who the men's watch is for

The G-Shock GM-2100B-3ADR men's watch fits men who want one watch for daily wear and active days. Its resin case and strap keep the watch light, and the 200 meters water resistance means you can keep it on for swimming and snorkelling. The analog-digital layout suits people who like hands for a quick glance and a digital display for extra detail. The green colour gives it a casual look that works with sportswear, weekend clothes and travel kit.

• Everyday wear at work or during leisure time
• Hiking, camping and other outdoor activities
• Swimming and snorkelling sessions
• Travel where world time helps with different zones
• People who like both analog hands and a digital readout

Less suitable if: you prefer a watch with a metal case or metal strap, because this model uses resin for both.

Men's watch specifications

Using and caring for the G-Shock GM-2100B-3ADR

Resin needs little more than a damp cloth to stay clean. Wipe the case and strap after wear to remove sweat and dust, and rinse with fresh water after swimming in saltwater so residue does not sit on the material. Keep the watch away from extreme heat and strong chemicals, which can harm resin over time. Store it in a dry place and press the buttons with a light touch.

• Wipe the resin case and strap with a damp cloth after daily wear.
• Rinse with fresh water after saltwater swimming.
• Avoid extreme heat and strong chemicals.
• Store the watch in a dry place when you are not wearing it.
• Press the buttons gently to avoid strain on the mechanism.

How to choose the right men's watch

When you choose a men's watch for active use, case size, material, water resistance and features matter most. The G-Shock GM-2100B-3ADR men's watch has a 44 mm round case, which sits in the mid-size range, and a resin case and strap that keep it light. Its 200 meters water resistance covers swimming and snorkelling, while the analog-digital movement gives you hands and a digital readout. The alarm, calendar, stopwatch, timer and world time functions cover daily timing and travel. If you want a metal case or strap, this model does not offer that.

Frequently asked questions

What is the G-Shock GM-2100B-3ADR made of?

The case and strap are made of resin, a lightweight material that resists knocks. Resin also keeps the watch comfortable for all-day wear.

What size is the case?

The case measures 44 mm in diameter. The round shape is a mid-size option that fits most wrists without feeling bulky.

Can I swim with this watch?

Yes. The watch has 200 meters water resistance, which is suitable for swimming and snorkelling, but it is not intended for scuba diving.

What functions does the watch include?

It includes an alarm, calendar, double LED light, stopwatch, timer and world time. Together they cover daily timing, low-light reading and travel.

How does the analog-digital movement work?

The movement shows the time with traditional hands and a digital display. You can use either readout depending on what you need to check.

Who is this men's watch suited to?

It suits men who want a durable watch for everyday wear, outdoor activities or travel. The green resin design also works for casual settings.

Does the watch come with a warranty?

Yes. It comes with a 1 Year International Warranty that covers manufacturing defects.

Is the watch suitable for scuba diving?

No. The 200 meters water resistance covers swimming and snorkelling, but the watch is not intended for scuba diving.