About Product:Transmission range: 10 meters function: power, according to the calling function, support music, multipoint connection processing custom: is printed LOGO: can be bluetooth protocol: 4.1 track: stereo way of use: whether wearing type single and double ears: bilateral stereo applicable gift-giving occasions: opening ceremony, employee benefits, awards ceremony, the anniversary celebration, fairs, advertising promotions, holiday, housewarming, wedding, pr planning, birthday, business gift color: brown, silver, blue, pink, black downstream of the main platforms: wish, amazon, speed sell tong, independent stand, LAZADA, ebay main sales regions: the east