The AW-64 has been the the Actigraphy device of choice for diagnosing insomnia and documenting circadian rhythms disorders for a number of years.
The ActiWatch 16, 64 and L have been replaced by the ActiWatch 2 and ActiWatch Spectrum. The new ActiWatch range represent a big jump forwards in technology and esthetics. Please see the related products link below or press the go back button in your browser.
Please note the new devices can be used interchangeably for most research projects and clinical uses. The validation papers are available for download below and in the web pages for the new devices.