gadget freak
A person who obsessively buys the latest fashionable electronic or computer equipment even when they have no practical use for it.
"Ben in the Commercial Department has gone out to buy that new Nokia Dual IP phone."
"Really?! I thought he already had the Motorola version."
"He does. He's just a total gadget freak."
"Really?! I thought he already had the Motorola version."
"He does. He's just a total gadget freak."