DPI changes, Back etc)This is a lot of work for something other companies do in seconds. They make a fun accessory to your outfit. When you come across really good VR games like this the PSVR limitation really start to show. Tried a new AAA battery, nothing. Why? I would also like to know. Bought them for my son because he is a chef and he is very pleased with them and highly recommends them to anyone that works in the kitchen Worked at first but lasted less than 48 hours. The earbuds are very comfortable for long term use. ( i love the size, form factor, performance etc. Will update this review in the future to see how it holds up over time .