Matte Shockproof Back Cover phone cases the same things like before, Valid serial number

Active noise reduction and transparency mode Spatial audio and head automatic tracking adjustment(Original high quality) Mixed valid serial numbers GPS positioning function Pop-up window function Wireless magnetic charging Real battery power display (easy to understand the charging situation and the real remaining power of the two pairs of headphones) You can also mix any items in our store to place an order In-ear detection function (automatically pause when the earphone is taken out of the ear, and automatically play when the earphone is inserted into the ear).syi