The HDCZ-AUT4 is a highly reliable external hard disk for AV recording, equipped with a high grade custom hard disk that supports 24 hours of continuous recording. Compatible with a wide range of consumer electronics including Panasonic Dega and Viera, recorders and TVs with USB hard disk recording function. Compatible appliances are over 900 models from 32 manufacturers. It has been tested to work in conjunction with the manufacturer, so you can use it with confidence.