The Gossen Digiflash offers all the features of the recently introduced Digisix meter, plus the added benefit of taking flash readings with a range of f/2 - f/32 at 100 ISO. The Digiflash is small enough to sit comfortably on your camera's hot shoe (with optional shoe adapter).
The meter sports a digital read-out and an analog scale for light levels that can be measured in reflective or incident mode.
DigiFlash - Digital Incident, Reflected and Flash Light Meter
CR2032 Lithium battery