This is what it should look like in the end
Step 1: What You Will Need
2. Watch Battery
4. Electric Tape
Step 2: Attaching the Clock to the Battery
First you are going to need to attach the two wires coming out of the clock to the watch battery. You can keep them attached to the battery with the electric tape.
Step 3: Making the Cast
First you are going to make a cast like the one in the picture without the two thin 2 by 4 pieces.
Next you are going to need to place the watch part into the case. After put the two blue bricks on the sides so the watch cannot fall out.