Sony HVR-DR60 60GB Hard Disk Recorder for Compatible Sony HDV and DVCam Camcorders 60 GB storage capacity; approximately 4.5 hours of recording time Records video to disk as the camcorder records to tape for Hybrid Recording master creation Features HDD Smart Protection; special 3G sensor, 14-second buffer memory, and shock absorber Handles .m2t (HDV) and .avi (DV) file formats Up to 13.5 hours of run time when used with NP-F70 battery