According to G-Shock Japan, all models in the GD-350 series have ended production. As is the case with other discontinued models, there may still be a lot of stock remaining throughout the world, and it could be a while before a shortage is noticeable.
The GD-350 was launched in 2013 and is popular for military use, due to its affordability, unique style, and special features. Some of these features include a large LCD display, a countdown timer that simultaneously displays the current time, a dedicated countdown start button, and an optional vibration alert (for end of countdown alerts, alarms, and the hourly time signal). The watch also has an approximate 5-year battery with a low battery warning. The uniqueness of the GD-350 made it somewhat of a cult favorite among certain G-Shock fans.
Until recently, the GD-350 was known as the only active G-Shock watch with a vibration alert. (There have been other G-Shock models with vibration, but the GD-350 was the only current, non-discontinued one in recent times.) However, there are now several G-Shock models with a vibration function, such as the GBD-H1000, GBD-100, GBD-200, and GBX-100.
In the U.S., the GD350-1 is still available at Amazon, and the GD350-8 and GD350-1B are also still listed for sale and due to be in stock soon. Gshock.com currently has the GD350-8, GD350-1B, and GD350-1C for sale.