This item is final sale and is not eligible for return or exchange.
Model: GRB-300 Series (GRB300EC-1A)
Gender: Unisex
Case Size (mm):
| Length | Width | Height |
|---|---|---|
| 59 | 54.7 | 15.7 |
Material: Bio-based Carbon, Bio-based Resin and Stainless Steel with Bio-based Resin band with Mineral Glass and Neobrite face
Description:
Whatever you’re doing, wherever you are — the G-SHOCK Master of G line has your back.
Based on GRAVITYMASTER, MUDMASTER, and MUDMAN models that deliver peak performance in punishing conditions in the air and on land, this line features a black watch case symbolizing toughness, with accents in vivid emergency colors that capture the world of professionals involved in rescue efforts and other critical missions.
The organic form of the GRAVITYMASTER GRB300EC is inspired by next-generation aircraft and rendered with a seamless exterior design. The Carbon Core Guard structure and wide 3D face deliver durability, readability, and a comfortable fit. Enjoy all the practical functions as well, including dual-time simultaneously showing the time in two cities, a flight log memory function for recording routes traveled, and more.
Watch Features:
- Shock Resistant
- Carbon Core Guard structure
- 200-meter water resistance
- Low temperature resistant (-20℃)
- Tough Solar (Solar powered)
Warranty: 2 Years Manufacturer
Authorized Casio Dealer

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- Plastic (CR-39) is our most basic material. We recommend this lens for patients with low prescriptions due to the thickness and weight of CR-39. This lens has no shatter or scratch resistance. Anti-reflective coating is included.
- Polycarbonate is the most common material used for patients. It is shatter & scratch resistant, and is lighter & thinner than plastic. We recommend this material for patients with a low to medium prescription. Anti-reflective coating is included.
- Trivex is the newest material available on the market. This material is the most lightweight and provide the most clarity. We recommend this material for patients with a low to medium prescription. Anti-reflective coating is included with a 2-year warranty that covers any damage.
- High Index 1.67 is great for patients with a medium to medium high prescription. This lens is about 20% thinner than polycarbonate.
- High Index 1.74 is the absolute thinnest lens available anywhere. We recommend this lens to patients with a medium high prescription to a high prescription. This lens is about 20% thinner than High Index 1.67.
| Location | Service | Cost |
| Domestic United States of America (48 States) | UPS 2nd Day Air - Shipping | $0.00 (FREE Orders >$80) |
| Alaska, Hawaii and Outlying US Territories |
|
$29.00 |
| International Shipping (Outside of the U.S) | DHL Global Express Shipping | $39.00 |
Shipping fee of $10-$15 applies to all orders under $80
Every shipment will be given a tracking number provided to you by e-mail.
