Wireless bluetooth headset

L12 Bluetooth headset: transmission range 10 meters: function Bluetooth protocol: 5.0 Channel: mono How to use: earplug style Whether single or double ear: bilateral stereo Applicable gift-giving occasions: weddings, birthdays, holidays, housewarming, trade fairs, advertising promotions, employee benefits, anniversary celebrations, business gifts, opening ceremonies, awards commemoratives, public relations planning Headphone material: ABS plastic Headphone power: 45 mA Charging compartment: 400 mA Listening time: about 3-5 hours