Overview:PRODUCT INFOMATIONThe Off Camera Shoe Cord OC-E3 is an accessory used for moving the EOS-dedicated flash off the camera. It can be used as far as Approx. 110cm away from the camera. All automatic functions of the EOS cameras are retained. It also features the same dust-and water-resistant performance as the EOS-1D series camera. The OC-E3 has been enhanced over the OC-SC 2 with better sealing against dust & moisture, to better match the weather-resistant design of the EOS 1D Mark III & the 580EX2 flash. It also now features a sturdier foot. How to use the OC-E3 cord?1. Attaching to the camera: Slip the camera connector of the OC-E3 into the camera's hot shoe all the way.2. Secure the off camera shoe cord: On the camera connector, slide the lock lever to the right. When the lock lever clicks in the place, it will be locked.3. Detach the off camera shoe cord: While pressing the lock-release button, slide the lock lever to the left & detach the off camera shoe cord. Specification: Max. Length: 1.5m Coiled Length: 0.6m Weight Approx:4g Size Approx:15 x 1.3 x 0.3