My dad just returned from a trip to china with a pair of xiaomi headphones for me. I'm certain they're not pistons. I wasn't able to get any references to them other than sites selling them. http://www.*******/35mm-Inear-Handsfree-Earphone-For-Xiaomi-Mobile-Phone-p-932493.html and http://www.*******.com/p-original_white_dexterous_earphone_remote_control_for_xiaomi_m2_m2s_smart_phone-4639.html They are branded with the Xiaomi logo. I was wondering if they were official Xiaomi headphones. If not, why do they have the Xiaomi logo, are they fakes?