This fine German product works very well and is quite flexible due to swivel and various bounce flash positions and built-in diffuser.

Owners manual included.  Somehow original box has gone missing.

SPECS from B&H Photo Video/NYC:

This Metz mecablitz 44 AF-1 digital Flash features E-TTL / E-TTL II compatibility for Canon cameras. This flash offers straightforward performance with all controls intuitively arranged on the back panel. With a maximum guide number of 144' for ISO 100 and 105mm, this flash delivers the power needed in various lighting conditions in TTL mode. It is also quite versatile with a modeling light for checking shadows as well as tilting up to 90° and 300° of rotation.

Among its controls is the ability to set 4 light levels in manual mode from 1/1 to 1/64 according to a particular lighting scenario. The photographer also has the ability, depending on the camera, to synchronize to the first or second shutter curtain for greater flexibility in the lighting process.

This flash also offers a slave mode which, depending on the camera, makes it possible to perform wireless TTL flash operation. Other flash enhancing controls include a motor zoom function (24-105mm), a fully swiveling reflector with flip-out reflector card, and an integrated wide-angle diffuser (12mm). A USB port enables firmware updates for future compatibility.

Manual Configuration: 1/1, 1/2, 1/8 or 1/64; supports positive correction value / negative correction value
Max. guide number 144' for ISO 100 and 105 mm
Vertical +90° and horizontal 300° swivel reflector
Motor zoom for 24 - 105 mm illumination
Integrated wide-angle diffuser for 12mm illumination
Flip-out reflector card
Modeling light for checking the image
Integrated auto focus flash metering
Flash readiness indicator and correct exposure display on the unit
Automatic unit shut-off
E-TTL / E-TTL II flash mode
Manual flash mode from 1/1 to 1/64 with 4 different output settings
Wireless slave mode exposure via built-in mastering camera flash or an additional external flash unit
First and second shutter curtain synchronization
Manual flash exposure correction for TTL flash mode
Automatic fill-in flash
Firmware updates are possible via the integrated USB socket