This has been a great flash for me, providing manual and automatic settings. However, I switched over to a Nikon camera awhile back and haven't used this flash since. It has been well cared for and stored without batteries. It comes with a stand, LumiQuest Pocket Bouncer, Case, and Manual.

A professional flash for the EOS-system, the 550EX offers every feature supported by the every EOS series camera in a package of exceptional workmanship. Full manual control of flash output is possible, or use the TTL flash capabilities of the camera it is mounted on. 

- Autozoom head covers from 24-105mm (17mm wideangle adapter included)

- Compatible with every EOS camera, but has special features when used with E-TTL EOS cameras

- Flash exposure compensation

- Flash exposure lock

- Second-curtain sync

- Wireless TTL flash when combined with ST-E2 Transmitter & multiple 550 EX's

- Stroboscopic mode shows several minute flashes continuously to easily view flash effect

- 4 Infared channels for multiple users in congested areas

- Ratio flash lighting of up to 8:1 when used with ST-E2 Transmitter & multiple 550 EX's