Wireless Bluetooth headset cap

Transmission range: 20m
Functions: power display, voice control, call function, support music, activate Siri
Bluetooth protocol: 5.0
Channel: stereo
Usage: head mounted
Single or binaural: bilateral stereo
Suitable for gift giving occasions: employee welfare, award ceremony, anniversary celebration, advertising promotion, festival, exhibition, public relations planning, birthday, business gift
Colour: dark grey, black, light grey
LED lamp illumination range: 20M-40M
Number of LED lights: 4