wireless car bluetooth headset invisible sports in-ear bluetooth 4.2

unit weight 0.158 kg transmission range 10 meters function power display, voice control, call function, support music, multi-point connection bluetooth protocol 4.1 channel stereo use earbud bilateral stereo applicable gift giving ceremony opening ceremony, employee benefits, awards commemorative, anniversary celebration, trade fair, advertising promotion, festival, wedding, public relations planning, housewarming, birthday, business gifts color black, white, red