The opn 3002n is supplied as a ready to go functional kit including a usb cable and lanyard with its unique ergonomic design and weighing only 60 grams the opn 3002 is perfectly suited to being worn around the users neck with the lanyard supplied the opn 3002n has a drop resistance to 1 5 meters no need for a special protection cover ease in use using the opn 3002n is straightforward no special training is needed as users only need to press a trigger key to operate and a reset key to con