Saturday October 4, 2003A "coin-sized" MP3 player has been unveiled by digital audio specialists Eratech. The EMP-Z squeezes in 128MB of storage capacity into a casing just 42 mm diameter by 10mm thick and weighing 15g and can be used as a portable HDD as well as an MP3 player. Designed to be worn as a necklace, the device works via headphones and one battery charge delivers 8hrs playback.No pricing is yet available for the EMP-Z which is expected to go into production in Korea next month.