Home Theater 2.1ch・For SW260 [Operation Confirmed] All buttons have been tested for functionality via infrared check. [Exterior] Overall, there is some discoloration from sun exposure. [Battery Case] No signs of battery leakage or rust. [Batteries] Batteries are not included. Please prepare two AAA batteries. ※ If the main unit does not respond, please check the battery level and the polarity of the batteries. ※ To avoid interference, some remotes have remote control codes. If the remote control code does not match the main unit, it will not respond. Please refer to the instruction manual for the main unit. ※ The product warranty is for 7 days after shipment. As this is a used item, we cannot offer an exchange. We will handle returns and refunds. Thank you for your understanding. ※ We disinfect and clean the product during packaging, so please purchase with confidence.