... with Crystal stereo sound 1,Foldable design 2,CE,FCC,RoHs 3,USB transmitter 4,Mini Jack Crystal clear stereo sound 2.4G wireless headset with USB ... Can offer 1-5 pcs sample for testing the quality.2, Sample payment: Via Paypal or WU.3, Sample Time: In 3-4 ... working days after payment received .PS: We always testing the sample before sending . Comfort 2.4G wireless USB headset with Crystal ...