the manual is in English only. for connection to the devices, the record does not indicate the need to support a long time, certainly, but we need the blue light and red flashing. I had to start over several times as the instructions indicated that only blue light appeared. works great with windows phone but coupled with my PC, the sound is impossible to listen chopped normally .... I do not know solve this problem. shame because for the price with phone the sound is good and the headset is light. Attention glasses, it's a bit of a chore.