CASIO G shock GWG-1000-1A3JF MUDMASTER Made in Japan



(Made in Japan)


Listed price: 86,400 JPY

Wave Ceptor (US, EU, JP & China)
Shock resistant,
Mud resistant,
Sapphire Crystal "With nonreflecting coating"
Screw Lock Crown
Solar powered, Water resistant: 20 ATM
Case / bezel material: Stainless steel /Resin strap

Altimeter 10,000 m
Barometer :(260 / 1.100 hPa)
Thermometer: –10 to 60°C (14 to 140°F)

Digital-compass: 10,000 m Altimeter
Altimeter: 700 m to 10,000 m

World time: 29 cities
1/100-second stopwatch
Countdown timer (Countdown Max: 60min)
Daily alarms 5 independent daily alarms
Battery power indicator
Power Saving
Auto-calendar, 12/24-hour format
Electro-luminescent backlight
Size: 59.5 X 56.1 X 18 mm / 119 g
Max wrist size 21cm/ 8.85inch

Module No.5463

Instruction(JP), Original Casio Box
Worldwide one year warranty

Free worldwide shipping

Customer Reviews

Based on 43 reviews
Rick M.
Fast shipping. Beautiful watch. Thank

Fast shipping. Beautiful watch. Thank you SeiyaJapan

Great service and awesome watch!

The watch was ordered on Sunday and arrived across the world in Sweden on Wednesday morning, with full and regular tracking updates along the way, perfectly packaged and with everything in absolutely pristine condition.

As others have said, the watch is quite heavy, but after only a few hours you get used to it. Loving both the functionality and the rugged aesthetic!

a Beautiful masterpiece

Again Seiya did not disappoint and the delivery was very fast and the product is phenomenal! GWG-1000 looks so robust and well maid. Will buy again from Seiya if I find something for my taste.

Aldo R.
Excellent Service

Ordered on the weekend and received my watch 6 days later. The packaging was well protected. Even the tape on the cardboard box had a tab on the tape to make it convenient for me to open. I love my Mudmaster. I look forward to my next purchase.

Alexander O.
The watch is superb, although

The watch is superb, although it is a bit heavy. service excellent, monday ordered, wednesday received, DHL tracking the whole time.

Bruce B.
Arrived very quickly from Japan.

Arrived very quickly from Japan. Superb watch.

chris j.
Mudmaster - Superb watch! Incredibly

Mudmaster - Superb watch! Incredibly fast shipping, packed well. Will not hesitate to buy from Seiya again!

Jim C.
This is my third GWG-1000

This is my third GWG-1000 Mudmaster, and my fourth watch purchase from Seiya. As always, Seiya-San is A Number One !!!

Great communication. Fast shipping. Watch is always “armor plated Ewith the packaging. I can heartily recommend Seiya to anyone who may be wanting to purchase a JDM watch.

Seiya is simply the best!

William J.
This is some of the

This is some of the most impressive service I’ve received. Watch is exactly as described. It was ordered on a Monday evening and delivered to Virginia on Thursday. I will definitely buy again from SeiyaJapan. Just tremendous.

Ramon G.
Awesome mudmaster at a great

Awesome mudmaster at a great price. Excellent service and communication from Seiya as usual.