This is the "ChillerX" which was just released in August. I will include the Elecom "EC-C17LBK" battery that is compatible, so you can use it immediately upon arrival. Both the vest and the battery are in excellent condition, having only been used once for testing. I am selling it because it didn't suit me. A dedicated extension tube is also included. The cooling is less intense than the IceMan, but I have confirmed its operation with the motorcycle USB power supply "Kaedear: KDR-B13". Therefore, if you connect it to that USB power supply, you should be able to cool continuously without worrying about the remaining charge during touring, etc. Due to the nature of the product, it is not possible to completely drain the water inside. Please read the instructions and replace the water before use. Due to the nature of used goods, no claims or returns are accepted except for initial defects. I will consider a small price reduction!