Cardiff Crown Court was told how the stun gun seized from Hathway was described as an “iPhone zapper”.
Officers carried out a search the defendant’s home and they found 27 separate deals of cannabis with a potential street value of £540.
They also discovered a small amount of cocaine.
Hathway, of High Cross Close, Rogerstone, pleaded guilty to possession of a Taser.
He also admitted possession of cannabis with intent to supply and possession of cocaine.
The defendant had five previous convictions for five offences.
These included assault occasioning actual bodily harm, affray, harassment and perverting the course of justice.
Nigel Fryer, representing Hathway, said in mitigation: “It was foolish to purchase the Taser.