The AD-E1 Multi-Function Shoe Adapter is the perfect solution for adapting legacy Speedlite accessories to the latest Multi-Function Shoe design. Compatible with a range of Speedlites and shoe-mounted accessories such as the EL-1, 600EX II-RT, ST-E3-RT, OC-E3 Flash Cord, and more, this adapter ensures seamless integration while preserving the integrity of your gear's weather-sealed design. With a secure connection to the updated shoe type, you can trust in reliable performance for your photography needs, even in challenging environmental conditions.