CASIO G-SHOCK GW-4000-1A3JF

Hexagon holes with green numbers and tough solar, its Casio brand with PROTECTION written.

Specification perhaps:

Module 5087
Solar charge system
Radio wave Atomic time keeping reception:
[Japan]: JJY frequency, 40kHz/60kHz
[North America]: WWVB frequency, 60kHz
[Europe]: MSF/DCF77 frequency, 60kHz/77.5kHz
[China]: BPC frequency, 68.5kHz
Tough MVT. (auto hand position correction)
Stainless steel / Resin case (with IP [ion plating] treatment)
Resin band
Mineral glass
Neobrite
Shock Resist
Triple Resist (impact / g-force / vibration)
Waterproof to 20bar
World Time (29 cities + UTC)
Stop Watch (1/100sec, 24min)
Alarm
Battery charge warning
Power saving function
Date and day of week display
Auto Calendar
Accuracy (if radio signal not avail.): within ±15sec/month
Band: 145-215mm
Size (H×W×D)/weight: 52.9×50.4×15.6mm and Weight: 75g