Plantronics Calisto P240-M USB Handset 57250.001 Spare Part it can tell which way

it can tell which way you're wearing it—thanks to the smart mic boom

while its unique curved

For connection to desktop phones

tune out noise

RIG also rolls with you – change out the boom mic for the stealth inline and take your music or gaming on-the-go

Plantronics Calisto P240-M USB Handset 57250.001 Spare Part it can tell which wayPlantronics Calisto P240 M USB Handset, UC Standard Version Built for UC Applications and Soft phones from Avaya, Cisco, Microsoft and More Make the evolution to PC communications simple with the new Calisto 240 M USB handset. It's perfect if you're new to PC calling. With its portable size, LCD display and integrated personal speakerphone, managing PC calls on the go has never been easier. And with top of the line audio technology, you'll like how