【Product Overview】 This is the COOidea A02 3.5mm stereo audio switcher. It's the same model sold on Amazon, a bi-directional switcher using 3.5mm AUX ports. It allows switching between 2 inputs and 1 output, or 1 input and 2 outputs, making it convenient for PCs, smartphones, laptops, headphones, speakers, and more. 【Key Features】 Compatible Ports: 3.5mm stereo (microphone function not supported) Noise cancellation design for clear sound quality Easy switching with a single button Compact size for easy portability Accessories: None (body only) 【Condition】 Purchased in March 2025 and used only a few times. Currently not in use. Operation has been confirmed, and audio switching works correctly. There are no noticeable scratches or stains, and it is in beautiful condition. Please understand that this is a used item before bidding. Box, instruction manual, and audio cables are not included. 【Usage Examples】 Switching audio from a PC and smartphone to a single speaker output Distributing a single audio source to multiple headphones 【Notes】 ・Please note that audio cables are not included. ・It is a plug-and-play type that does not require power. ・Microphone function is not supported. ・No claims or returns accepted.