Authentic cartridge. Tested on multiple Game Boy Advance SPs and an Analogue Pocket before shipping. Brand new CR1616 battery installed for the real-time clock, from fresh stock. Expect 10-15 years of battery life. Gen 3 pokemon cartridge saves are flash-based. The battery powers time-based events. Save file is verified working. Pins are cleaned and inspected. I combine shipping automatically unless you ask otherwise.
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