Casio G-SHOCK GA-2100-1AER-Metal Casioak Mod Watch Black Dial Silver Bracelet UK. This watch is a Custom CasiOak conversion that will be delivered to you in its original unworn and fully converted state. This conversion was executed on a brand-new Casio GA-2100-1AER model, using the latest and highest quality conversion kit currently available on the market. The Casio G-Shock GA-2100-1AER watch will be provided in its original presentation tin along with the outer cardboard packaging, instruction manual, and paperwork, all of which are shown in the pictures. The package – the watch will arrive to you already converted as shown in the pictures. 2x Tool set for adjustment. Octagon Style Strap & Butterfly Clasp. Movement: Japanese Quartz Movement. The original rubber Casio watch strap is included with tags to allow you to easily switch back if and when you need to. If you have any questions or queries please feel free to contact me I will be more than happy to help.