CASIO MTG-B4000BD-1AJF Bluetooth Solar Atomic Watch G-SHOCK MT-G Series Black Stylish Durable Multi-FunctionProduct Highlights Introducing a model from the M T G series, which fuses resin and metal materials, the origin of G SHOCK, and pursues innovative structural beauty. This model unifies carbon and metal in black, exuding a powerful form and refined presence. The MTG B4000 features a dual core guard structure developed using AI that utilizes accumulated shock resistance data, and adopts a frame that combines carbon and stainless steel. This achieves an