2style: black disk black belt + cool bracelet + box
Connection mode: Bluetooth connection
lower power consumption
without any annoying delays or lag
Function: On-demand music
Wireless sports headphones heart rate watch 2style: black disk black beltTransmission range: 20 meters Function: battery display, call function, NFC function, voice control, music support, multi point connection Bluetooth protocol: 5. 0 Channel: stereo Usage: earplug style Single or dual ear: bilateral stereo Applicable gift giving occasions: weddings, birthdays, holidays, housewarming, trade fairs, advertising promotions, employee benefits, anniversary celebrations, business gifts, opening ceremonies, awards