For sale due to equipment reorganization. Because the batteries were left inside, there was battery leakage inside the battery box. I couldn't take a picture of the inside, but it has blue corrosion, so I'm selling it as junk. Please use it for parts, etc., when purchasing. The Canon AE Power Winder FN is a high-performance camera accessory with a counter and reset function. - Model: AE Power Winder FN - Brand: Canon - Country of Manufacture: Japan - Functions: Counter, Reset function - Connection Terminals: Power terminal Thank you for viewing.