A7 TWS Wireless Bluetooth Headset Stereo Handfree Sports Bluetooth Earphone With Charging Box For iphone Android PK X2T i7/i7s Color:black Uppers:Flyknit Fabric

Uppers:Flyknit Fabric

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Recommendation table is based on years of experience from the seller

(5) Color: Red

Size Chart(Unit:cm/inch) Size:2XL Waist:84cm/33

A7 TWS Wireless Bluetooth Headset Stereo Handfree Sports Bluetooth Earphone With Charging Box For iphone Android PK X2T i7/i7s Color:black Uppers:Flyknit Fabricnote: there is a film to protect the case from scrach during the transportion! it is not scratch!!! the 1 step: take out two earphone ,press both switch for 6 seconds to let go ,until the two headphone indicator light flash red and blue,wait for 3 seconds, double click any one of earphones switch(the main headsets) then two headphone in series with each other,at this point,master headphone showes flashing blue and red,vice headphones shows slow flash