Details
| Collection | G-Shock |
| Style | Shape/Round |
| Material | Resin |
| Band/Strap | Rubber Strap |
| Dimensions | 51.20 |
| Dial Colour | Black |
| Glass | Mineral |
| Watch Movement | Analogue Digital |
| Water Resistance | 200M |
This Casio G-Shock comes with Casio's standard warranty and packaging and, dependent on style, may also include a Casio instruction manual.
Read more information regarding our Product Disclaimers.
Dispatch, Shipping & Delivery
1) Important Dispatch Notes:
Please allow 1-3 business days for your order to be shipped. Please allow 7-24 business days for your SPECIAL ORDER to be shipped.
2) Important Shipping Notes:
Please allow 7-14 business days (after receiving Shipping Confirmation) to receive your Standard Post parcel.Please allow 1-3 business days (after receiving Shipping Confirmation)to receive your Express Post parcel.
3) Important Delivery Notes:
ALL orders require signature on delivery. If you are not home, your parcel will be taken to your nearest post office for collection.
Exchanges, Returns & Refunds
Important Returns Notes:
Wallace Bishop (online) offers 21-day (after being received) returns for change of mind. Please ensure your item/s meet our returns policy. Merchandise must be in new and saleable condition and accompanied by the original sales receipt and original packaging. Item/s may be exchanged for another item of the equivalent value.
You can return your item/s to the below address but please note, return costs will not be reimbursed for change of mind returns.
Return Address:
ATTN: Web Sales
55 Doggett Street, Newstead 4006 QLD
Important Refunds Notes:
Refunds will be issued back to the original payment method used. Please allow 3-7 business days to receive your funds.
Contact Us
Looking for further assistance? Get in touch with our friendly team today.
Head Office and Supplier Enquiries
Find a Store near you
Customer Service Hours:
Monday to Friday 8.30am – 5.00pm (AEST)
Outside of these hours, we recommend you fill out the form on this page and one of our customer service consultants will get back to you as soon as they can.
Description
The Casio G-SHOCK GA100-1A1 is a bold and durable watch designed for sport, work, and everyday wear. Known for its oversized all-black design, this model combines rugged styling with practical analogue-digital functionality.
The watch features a large 51.2 mm resin case and matching black resin band, creating the strong and aggressive appearance that has made the GA100 series one of the most popular G-SHOCK collections worldwide. Built with G-SHOCK’s trusted shock-resistant structure, the GA100-1A1 is made to handle impacts, vibration, and demanding daily use. The watch also includes JIS Class-1 Magnetic Resistance, helping maintain accurate timekeeping when exposed to magnetic fields from electronic devices and equipment.
With 200-metre water resistance, the watch is suitable for swimming, outdoor activities, and everyday water exposure. The analogue-digital display combines large aluminium hands with multiple digital screens for a sporty and highly functional layout. Features include World Time across 48 cities, a 1/1000-second stopwatch with speed indicator, countdown timer, five daily alarms, automatic calendar, and LED light for easier viewing in dark conditions. The layered dial design and oversized buttons improve readability and usability during active use.
Casio designed the GA100-1A1 with a three-dimensional dial structure that gives the watch a technical and powerful appearance. The lightweight resin construction helps improve comfort despite the larger case size, making it practical for long periods of wear. The battery offers approximately two years of operation under normal use.
Dispatch, Shipping & Delivery
1) Important Dispatch Notes:
Please allow 1-3 business days for your order to be shipped. Please allow 7-24 business days for your SPECIAL ORDER to be shipped.
2) Important Shipping Notes:
Please allow 7-14 business days (after receiving Shipping Confirmation) to receive your Standard Post parcel.Please allow 1-3 business days (after receiving Shipping Confirmation)to receive your Express Post parcel.
3) Important Delivery Notes:
ALL orders require signature on delivery. If you are not home, your parcel will be taken to your nearest post office for collection.
Exchanges, Returns & Refunds
Important Returns Notes:
Wallace Bishop (online) offers 21-day (after being received) returns for change of mind. Please ensure your item/s meet our returns policy. Merchandise must be in new and saleable condition and accompanied by the original sales receipt and original packaging. Item/s may be exchanged for another item of the equivalent value.
You can return your item/s to the below address but please note, return costs will not be reimbursed for change of mind returns.
Return Address:
ATTN: Web Sales
55 Doggett Street, Newstead 4006 QLD
Important Refunds Notes:
Refunds will be issued back to the original payment method used. Please allow 3-7 business days to receive your funds.
Contact Us
Looking for further assistance? Get in touch with our friendly team today.
Head Office and Supplier Enquiries
Find a Store near you
Customer Service Hours:
Monday to Friday 8.30am – 5.00pm (AEST)
Outside of these hours, we recommend you fill out the form on this page and one of our customer service consultants will get back to you as soon as they can.



