Fiio KA17 dedicated E-STICK (battery) Wide dedicated leather case DAC pocket 3-piece set. The battery and leather case are almost unused and are in beautiful condition. The DAC pocket has some frayed threads due to the widening of the divider. By purchasing a magnetic ring on Amazon, etc., the DAC pocket can be used with smartphones other than iPhones. If you use the Fiio KA17, you can reduce battery consumption and noise, and it fits in one hand, improving storage capacity. In addition, I am selling various hobby items such as DACs, cables, and earphones. Please take a look if you like. #fiio #fiioka17 #DACpocket #DACcase