Helmet talkback bluetooth headset $ 30.84 Name: Helmet Bluetooth intercom headset Transmission range: 500 meters Function: call function, support music, Bluetooth intercom Bluetooth protocol: 2.1+EDR Channel: stereo Usage: head-mounted Single or dual ear: bilateral stereo Applicable gift-giving occasions: awards commemorations, advertising promotions, trade fairs, business gifts, cycling enthusiasts Name: Motorcycle helmet Bluetooth intercom headset Material: ABS Host size: 8cm5cm3.3cm Power input voltage: AC 100-240V Battery: 350mAh rechargeable polymer battery Connection method: Bluetooth With FM radio function
