GS小學堂Episode 3：平凡的進階
12:21
GS小學堂Episode 4：獨一無二的第三類機芯
7:28
The Grand Seiko SBGN027 comparison vs. the Discontinued SBGN003 and Hands on review!
14:43
GS小學堂Episode 1：奠定Grand Seiko的核心價值
11:39
GS小學堂Episode 6：基礎之上、規格進化的GS潛水錶
8:00
Iniciar en la relojería sin presupuesto ni experiencia. Desde 0!!
7:28
故障石英表更换机芯,replace movement of quartz watch
13:36
GS小學堂Episode 7：從實用邁向賞玩的道路
7:20