About Product:Brand: neutral transmission range: 10 meters function: power display processing custom: is printed LOGO: can be bluetooth protocol: 4.2 track: stereo way of use: whether wearing type single and double ears: bilateral stereo applicable gift-giving occasions: opening ceremony, birthday, awards ceremony, wedding, advertising promotions, business gifts, anniversary celebrations, public relations planning, fairs, festivals, employee benefits, housewarming color: black, white, red, blue, gold downstream of the main platforms: independent station, speed sell tong, wish, amazon, ebay, LAZADA major sales areas: northeast Asia, Europe, Africa, southeast Asia, the Middle East, South America, north