Product Review

Features:
Compatible with all Canon DSLR Cameras
Built-in 2.4G wireless radio transmission(MASTER/SLAVE function)
Optical transmission(MASTER/SLAVE function)
E-TTL automatic balanced fill-flash
Supports 1/8000 High Speed Sync
Wide-Area AF-Assist Illuminator

Bounce Flash:
By tilting or rotating the flash head, you can bounce the light off a ceiling or wall to make use of reflected light, providing more natural-looking pictures of people with softer shadow.
Close-up flash photography (achieved with use of the built-in wide-flash adapter and the flash head tilted down)
Flash Output Level Compensation/Exposure Compensation

Advanced Wireless Lighting:
Use of multiple speedlite units lets you combine effects such as brightening the front of the subject, accentuating outlines, or softening shadows.
Rear-Curtain Sync
Custom setting
Standby function
Thermal cut-out(overheating protection)

External Power Sources: increases the number of flash firings and provides faster recycling times.
Specifications:
Guide No.: 58(ISO 100,105mm)
Flash Modes: E-TTL/Manual/MULTI/Master/Slave/S1/S2
Flash Coverage: 18 to 180mm(14mm with wide panel)
Group A B C
Channel 1 2 3 4

Tilting Head: 0-360 degree horizontally and 0-90 degree vertically
Internal Power: 4*AA Ni-MH(recommended)/Alkaline batteries (batteries are not included)
Full Power Flash Times:Approx.230 times (2500mA Ni-MH batteries used)
Recycling Time:Approx.0.1-2.9s
Flash Duration:1/200s-1/20000s
Wireless Trigger Transmission Distance:
100m(2.4G wireless)
Color temperature:5600±200K
Package Included:
1 x ESDDI PLF-650C Speedlite Flash for Canon
1 x 2.4G Wireless Trigger
1 x Mini Stand
1 x Hard Flash Diffuser
1 x Protection Pouch
1 x User Manual
HSS or TTL is not supported when using the trigger