This is a very lightly used, mint condition Canon Speedlite 580EX II in perfect working order, with original case and shoe-mount stand -- works with Canon EOS and PowerShot G series cameras. Specifications Power: Guide No (ISO 100) 190' / 58 (at 105mm) Angle of Flash Coverage Auto 24-105mm Manual 24mm, 28mm, 35mm, 50mm, 70mm, 80mm, 105mm With Diffuser 14mm AF Assist Beam AF Assist Beam Type Near-infrared light pattern projection AF Assist Beam Points 1 to 45 AF Assist Beam Min Focal Length 24mm (APS-C 15mm) AF Assist Beam Range – Center 2.0-33' (0.6-10m) AF Assist Beam Range – Periphery 2.0-16' (0.6-5m) Flash Exposure Modes Auto Exposure Standards Supported E-TTL II/E-TTL External Auto Flash Exposure Sensor Manual Flash Exposure Features Controllable from Flash High Speed Sync Flash Exposure Lock (FEL) Flash Exposure Compensation (FEC) Flash Exposure Bracketing (FEB) Second Curtain Flash Sync Modelling Flash Color Temperature Info Communication Supports Flash Settings by Camera Menu (Enables many options not available directly on the flash) Custom Functions: 14 Personal Functions Wireless Flash Capabilities Wireless Flash Transmitter Capability Wireless Transmission Type Optical Transmitter Max Range – Indoors 39.4-49.2' (12-15m) Transmitter Max Range – Outdoors 26.2-39.4' (8-10m) Wireless Flash Slave Capability Optical Wireless Flash Groups: 3 Wireless Flash Channels: 4 Flash Head Movement Range Flash Head Movement Up 45, 60, 75 and 90° Flash Head Movement Down 7° Flash Head Movement Left 60, 75, 90, 120, 150 and 180° Flash Head Movement Right 60, 75, 90, 120, 150 and 180° Flash Features Dust and Water Resistance PC Terminal Power Source Power Source 4x AA Number of Flashes (approx) 100 - 700 Recycling Time – Alkaline (approx) 0.1 to 6 sec. External Power Source Compact Battery Pack CP-E4 Size Size (WxHxD) 3.0 x 5.3 x 4.5" (76 x 134 x 114mm) Weight 13.2 oz (375g) Accessories Compatible Accessories Off-camera shoe cord OC-E3 EX Series Speedlite with Optical Slave function Dedicated Flash Bracket SB-E2 Compatible Cameras:All Canon EOS cameras PowerShot G series cameras