How do I know if this is a real HYDRAGUN?

If the price looks too good to be true, it probably is. People who sell counterfeit products often promote them at just below the normal retail price ($399 SGD/$299 USD), so you presume you're simply receiving a great deal. Taking note of the price is important, although it's not the only consideration.

The counterfeit products and their packaging are similar in appearance to genuine HYDRAGUN products, but they do not meet the high standards of performance found in genuine HYDRAGUN technology. Counterfeiters go to great lengths to make their products look like genuine products.