Casio G-Shock CasiOak GA-2100-1A1DR Quartz Men’s Watch

The Casio G-Shock GA-2100-1A1DR, widely known among watch enthusiasts as the CasiOak, is an all-black analog-digital sports watch from Casio’s iconic G-SHOCK 2100 Series. Priced at ৳17,000 in Bangladesh, this model combines a distinctive octagonal bezel, lightweight Carbon Core Guard construction, and practical everyday timekeeping functions.

The GA-2100-1A1DR stands out for its slim 11.8 mm profile and understated black design. Its carbon-reinforced resin case maintains the rugged construction associated with G-SHOCK while keeping the watch’s weight at just 51 grams. The combination of analog hands and a digital display provides traditional timekeeping alongside useful functions such as world time, stopwatch, countdown timer, and five daily alarms.

Protected by mineral glass and rated for 200-metre water resistance, the Casio G-Shock CasiOak GA-2100-1A1DR offers a distinctive balance of design and functionality. It is particularly appealing to buyers who appreciate minimalist black watches, octagonal case designs and the recognisable G-SHOCK identity.

Available with a 2-Year International Warranty, this model is an attractive option for anyone looking to purchase a versatile Casio G-SHOCK in Bangladesh.

Casio G-SHOCK GA-2100-1A1DR Specifications

• Brand: Casio
• Collection: G-SHOCK
• Series: 2100 Series
• Model: GA-2100-1A1
• Reference Number: GA-2100-1A1DR
• Movement: Quartz
• Module: 5611
• Display: Analog-Digital
• Case Dimensions: 48.5 × 45.4 × 11.8 mm
• Weight: 51 grams
• Case Material: Carbon / Resin
• Bezel Material: Resin
• Case Shape: Octagonal
• Case Colour: Black
• Dial Colour: Black
• Crystal: Mineral Glass
• Band Material: Resin
• Band Colour: Black
• Construction: Carbon Core Guard
• Shock Resistance: Yes
• Water Resistance: 200 metres / 20 bar
• Battery: SR726W × 2
• Approximate Battery Life: 3 years
• Accuracy: ±15 seconds per month
• World Time: 31 time zones, 48 cities and UTC
• Stopwatch: 1/100-second stopwatch
• Countdown Timer: 24-hour countdown timer
• Alarm: Five daily alarms
• Additional Functions: Hourly time signal, full automatic calendar, hand-shift feature, and 12/24-hour format
• Illumination: Double LED light
• Warranty: 2-Year International Warranty

Design and Build Quality

The Casio G-Shock GA-2100-1A1DR brings a distinctive octagonal design to the traditional G-SHOCK sports-watch category. Its monochromatic black appearance, slim case proportions, and carbon-reinforced construction make it a recognisable member of the 2100 Series.

Case and Dial Design

The watch features an octagonal resin bezel surrounding a carbon-reinforced resin case. Its dimensions are 48.5 mm in length, 45.4 mm in width and 11.8 mm in thickness.

Its relatively slim profile sets the GA-2100 apart from many traditionally bulky G-SHOCK designs. Its 51-gram weight also contributes to its lightweight construction.

The all-black colour scheme extends across the case, bezel, dial, and resin band. The monochromatic look creates a clean, understated aesthetic that appeals to buyers who prefer dark-coloured watches.

The analog-digital display combines traditional hour and minute hands with a digital screen. The hands provide immediate time information, while the digital display shows additional functions such as date, stopwatch readings,, and world time.

Bracelet or Strap

The GA-2100-1A1DR features a black resin band that complements its all-black case and bezel.

Resin is widely used in G-SHOCK sports watches because of its lightweight construction and flexibility. The matching band maintains the model’s consistent monochromatic appearance.

Its resin construction also complements the Carbon Core Guard case design, keeping the overall watch relatively lightweight.

Crystal and Water Resistance

Casio equips the GA-2100-1A1DR with mineral glass to protect the analog-digital display.

The watch offers 200-metre water resistance, equivalent to 20 bar. This is an important specification for buyers looking for a sports watch with substantial water-resistance capability.

Its shock-resistant construction and Carbon Core Guard structure further reflect the G-SHOCK collection's functional design philosophy.

Movement and Performance

The Casio G-Shock GA-2100-1A1DR uses Casio Module 5611, a battery-powered quartz movement that powers the watch’s analog and digital functions.

Unlike mechanical watches, it does not require manual winding or automatic movement from the wearer’s wrist.

Movement and Calibre

The watch uses quartz timekeeping technology with an analog-digital display.

Its Module 5611 controls the watch’s timekeeping and additional functions, including world time, stopwatch, countdown timer, and daily alarms.

The analog display features two hands for hours and minutes, supported by a digital display for additional information.

The hand-shift function is particularly useful because it temporarily moves the analog hands away from the digital display when necessary, making the digital information easier to view.

Power Reserve and Accuracy

The GA-2100-1A1DR operates using two SR726W batteries.

Casio specifies an approximate battery life of three years, although actual battery life can vary depending on usage and operating conditions.

Its stated accuracy is ±15 seconds per month.

Unlike Tough Solar G-SHOCK models, the GA-2100-1A1DR uses conventional replaceable batteries rather than solar charging technology.

Functions and Complications

The Module 5611 offers several practical functions for everyday timekeeping.

• World Time: Displays time across 31 time zones, including 48 cities and UTC.
• Stopwatch: Measures elapsed and split times with 1/100-second precision during the first 60 minutes.
• Countdown Timer: Provides countdown functionality with a maximum range of 24 hours.
• Daily Alarms: Five daily alarms help with everyday reminders.
• Hourly Time Signal: Provides an hourly time notification.
• Full Automatic Calendar: Automatically manages calendar information through 2099.
• 12/24-Hour Format: Allows the wearer to choose the preferred time display format.
• Hand-Shift Function: Moves the analog hands away from the digital display when necessary.
• Double LED Illumination: Lights the analog and digital display areas.

These functions make the GA-2100-1A1DR a practical analog-digital watch without the complexity of smartphone connectivity or rechargeable smartwatch features.

Features and Everyday Use

The Casio G-Shock GA-2100-1A1DR combines a relatively slim case, lightweight construction, and practical digital functions.

Its 45.4 mm case width gives it a noticeable wrist presence, while the 11.8 mm thickness keeps it comparatively slim for a G-SHOCK analog-digital model.

The black analog-digital dial offers two ways to read the time. The hands provide traditional timekeeping, while the digital display supports additional functions.

The hand-shift feature helps when the hands overlap the digital display and obscure information.

Its 200-metre water resistance, shock-resistant construction, and resin band make it a strong option for buyers looking for a functional sports watch.

The absence of Bluetooth and solar charging is worth noting. This model focuses on conventional quartz timekeeping rather than connected smartwatch functionality.

For everyday wear, its all-black appearance offers a restrained alternative to brightly coloured sports watches. It can appeal to people who want a distinctive G-SHOCK design without an oversized or visually complicated appearance.

Casio G-Shock GA-2100-1A1DR Nickname and Model Identity

Collectors widely recognise the Casio G-SHOCK GA-2100-1A1DR as the CasiOak.

CasiOak is an informal nickname watch enthusiasts use for the G-SHOCK GA-2100 family.

The name combines Casio and Royal Oak, referring to the octagonal bezel design that reminds collectors of the famous Audemars Piguet Royal Oak watch.

The nickname originated within the watch enthusiast community rather than being introduced by Casio as an official product designation.

The GA-2100’s octagonal bezel and relatively slim analog-digital construction helped the model develop a strong identity among collectors.

For the GA-2100-1A1DR, the nickname is especially relevant because its all-black colour scheme gives it a distinctive monochromatic appearance.

CasiOak is a collector nickname, not an official Casio collection name. The manufacturer’s official model designation remains GA-2100-1A1.

Who Should Consider the Casio G-Shock GA-2100-1A1DR?

The GA-2100-1A1DR may appeal to several types of watch buyers.

• G-SHOCK enthusiasts: People who appreciate the brand’s shock-resistant construction and distinctive sports-watch designs.
• CasiOak collectors: Watch enthusiasts interested in the recognisable octagonal 2100 Series.
• Minimalist watch lovers: Buyers who prefer an all-black colour scheme and understated appearance.
• Analog-digital watch enthusiasts: People who want traditional hands alongside a digital display.
• Everyday watch buyers: Those looking for a relatively lightweight sports watch with practical timekeeping functions.
• Outdoor and active lifestyle users: Buyers who value shock resistance and 200-metre water resistance.
• Quartz watch enthusiasts: People who prefer battery-powered timekeeping without the maintenance associated with mechanical movements.

At ৳17,000, the GA-2100-1A1DR is worth considering for buyers looking for an established G-SHOCK design with a distinctive collector identity and practical everyday functionality.

Why Buy the Casio G-Shock GA-2100-1A1DR from SecondBit?

SecondBit offers branded watches through its online store and physical showroom in Bangladesh.

Shop Online or Visit Our Showroom

Explore the Casio G-Shock GA-2100-1A1DR and other branded watches on the SecondBit website.

Customers who prefer to inspect a watch before purchasing can visit our showroom:

SecondBit Showroom

Shop 470, Level 3, Police Plaza Concord Shopping Mall, Gulshan 1, Dhaka, Bangladesh.

Showroom inspection and pickup are available. Please confirm product availability before visiting.

Payment and EMI Options

SecondBit provides several payment options for customers purchasing branded watches.

Available payment methods include:

• Credit cards.
• Debit cards.
• Mobile Financial Services (MFS).
• Bank transfer.
• Cash on delivery with a 10% advance payment. Customers can pay the remaining amount after receiving their order.
• EMI through 30+ banks and MFS providers, subject to applicable eligibility requirements and provider terms.

For more information about available payment options and applicable conditions, please review our payment policy.

Nationwide and Dhaka Delivery

SecondBit offers nationwide delivery across Bangladesh, subject to applicable service terms.

Customers inside Dhaka City can also request instant delivery through Pathao or Uber Instant Delivery after completing full payment.

Showroom pickup is another available option.

For more information about delivery arrangements, please read our delivery policy.

Please review our terms and conditions before placing an order.

How to Purchase the Casio G-Shock GA-2100-1A1DR

Purchasing the Casio G-Shock GA-2100-1A1DR from SecondBit is straightforward.

1. Visit the SecondBit website and find the Casio G-Shock GA-2100-1A1DR product page.
2. Customers can order through our website and choose an available payment method.
3. Pay using an available credit card, debit card, MFS service, or bank transfer.
4. Choose cash on delivery with a 10% advance payment and pay the remaining amount after receiving your order.
5. If eligible, choose EMI through 30+ banks and MFS providers, subject to applicable terms.
6. Alternatively, visit our showroom at Shop 470, Level 3, Police Plaza Concord Shopping Mall, Gulshan 1, Dhaka, to inspect the watch before purchasing.
7. Choose showroom pickup or nationwide delivery according to your preference and the applicable service terms.
8. Customers inside Dhaka City can request instant delivery through Pathao or Uber Instant Delivery after full payment.

For complete information, review the payment, delivery, and warranty policies.

Frequently Asked Questions About the Casio G-Shock GA-2100-1A1DR

What is the price of Casio G-Shock GA-2100-1A1DR in Bangladesh?

The Casio G-Shock GA-2100-1A1DR is priced at ৳17,000 at SecondBit. Contact our team to confirm current availability and purchasing details.

Does Casio G-Shock GA-2100-1A1DR come with a warranty?

Yes. The Casio G-Shock GA-2100-1A1DR comes with a 2-year international warranty. Coverage depends on the applicable warranty terms and conditions.

Can I order Casio G-Shock GA-2100-1A1DR online?

Yes. You can order the Casio G-Shock GA-2100-1A1DR through our website and choose an available payment method. Available online payment methods include credit cards, debit cards, MFS, and bank transfer. Cash on delivery is also available with a 10% advance payment. You can pay the remaining amount after receiving your order.

Can I buy Casio G-Shock GA-2100-1A1DR on EMI?

Yes. SecondBit offers EMI through 30+ banks and MFS providers, with flexible monthly payment plans. Eligibility and installment terms depend on the applicable bank or provider conditions.

Does SecondBit deliver Casio G-Shock GA-2100-1A1DR across Bangladesh?

SecondBit offers nationwide delivery, subject to applicable service terms. Instant delivery is also available inside Dhaka City through Pathao or Uber Instant Delivery after full payment. Contact our team to confirm delivery options for your location.

Can I inspect Casio G-Shock GA-2100-1A1DR before purchasing?

Yes. You can visit the SecondBit showroom at Shop 470, Level 3, Police Plaza Concord Shopping Mall, Gulshan 1, Dhaka, Bangladesh, to inspect the timepiece before deciding. Showroom pickup is also available. Please confirm product availability before visiting.

Where can I buy Casio G-Shock GA-2100-1A1DR in Bangladesh?

You can purchase the Casio G-Shock GA-2100-1A1DR through the SecondBit website or visit the SecondBit showroom at Shop 470, Level 3, Police Plaza Concord Shopping Mall, Gulshan 1, Dhaka, Bangladesh.

What does the Casio G-Shock GA-2100-1A1DR warranty cover?

The Casio G-Shock GA-2100-1A1DR comes with a 2-year international warranty. Warranty coverage is subject to the applicable terms and conditions. Physical damage and repairs carried out by a third party may void the warranty where specified in the applicable terms. Refer to the relevant warranty documentation for the complete coverage, exclusions, and service conditions.

Why is the Casio G-Shock GA-2100-1A1DR called the CasiOak?

The name CasiOak is a collector nickname combining Casio and Royal Oak. It refers to the octagonal bezel design of the G-SHOCK 2100 Series, which reminds enthusiasts of the Audemars Piguet Royal Oak’s geometric case design.

Is the Casio G-Shock GA-2100-1A1DR an automatic watch?

No. The GA-2100-1A1DR is a battery-powered quartz watch with an analog-digital display. It uses Casio Module 5611 rather than a mechanical automatic movement.

Does the Casio G-Shock GA-2100-1A1DR have Bluetooth connectivity?

No. The GA-2100-1A1DR does not have Bluetooth connectivity. It is a conventional quartz analog-digital watch with the timekeeping and sports functions provided by Module 5611.

How long does the Casio G-Shock GA-2100-1A1DR battery last?

Casio specifies an approximate battery life of three years using two SR726W batteries. Actual battery life can vary depending on usage and operating conditions.

What is the Carbon Core Guard structure in the Casio G-Shock GA-2100-1A1DR?

Carbon Core Guard is Casio’s reinforced case construction that combines carbon material and resin. It is designed to provide shock-resistant protection while keeping the watch relatively slim and lightweight.