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Item no: 07S Transmission range: 10 meters Function: Power display Function: call function Function: Support music Customization: Yes Printing LOGO: Yes Bluetooth Protocol: 5.0 Channel: Stereo Usage: head-mounted Single and binaural: bilateral stereo For gift-giving occasions: wedding For gift-giving occasions: birthdays For gift-giving occasions: festivals For gift-giving occasions: housewarming For gift-giving occasions: trade fairs For gift-giving occasions: advertising promotions For gift-giving occasions: employee benefits For gift-giving occasions: anniversary celebrations For gift-giving occasions: business gifts For gift-giving occasions: opening ceremony For gift-giving occasions: award commemorations For gift-giving occasions: public relations planning Color: black Color: white Color: red Color: dark blue Color: light green