Peripheral device for the Famicom with data saving function. - Model: AS-TF 03 - Brand: ASCII - Function: Peripheral device for data saving - Switch: Equipped with a protect switch - Connector: Famicom connector Thank you for viewing. The battery spring is detached on one side, but it will work without problems if attached with the battery. Data remaining was confirmed on SFC with the Turbo File adapter. Overwrite is possible, but I have not done it. I couldn't confirm it because I don't have the FC console, but it contained save data from Wizardry 1. Since it is old, I do not guarantee operation on all devices. It is treated as junk. Please consider it with 3N (no returns, no refunds, no claims) due to being a home-stored item.