I only tested this at home for 2-3 days after purchase, and it has been stored in its box since then. I am selling it to organize my equipment. 【Condition】 Usage: Short period of 2-3 days (indoors, no pets, non-smoking environment) Operation: I have confirmed that all buttons, knobs, sampling functions, etc. are working. 【Included Items】 ・CHOMPI Sampler unit ・USB cable ・micro SD (already inserted in the unit from the beginning) ・Quick Start Guide ・CHOMPI sticker ・Original box (※All items included at the time of purchase are included) Immediate purchase is welcome. Please feel free to comment if you have any questions.