As well as using the flash look out for interesting natural light. I saw a shaft of light across my desk and used it in these shots...
The lighting was provided by the sun I just added a sheet of A4 paper and the watch. After I had a few shots I started to think about a few more details I could have controlled like the position of the hands on the watch face and the different shapes they made.
Nikkor AF-S DX; 18-105 f/3.5-5.6G VR, 55-300 f/4.5-5.6G VR, 35mm f/1.8G
Speedlight SB-700 http://keystrokesukimages.com