GW7900B-1,GW7900-1 | Digital Black Men's Watch G-SHOCK | CASIO,Casio G-Shock Gw-7900B Radio Solar Watch,GW-7900B. I've owned 5 G-Shocks, and this one is my favorite so far. Multiband 6, countdown timer, solar, moon phase, high tide, world time, stop watch, 5 alarms. Easy to read in,Amazon.com: Casio Men's GW-7900-1CR G-Shock Digital Display Quartz Black Watch : Clothing, Shoes & Jewelry,