Cycling smart helmet with bluetooth receiver telephone answering and other multi-functional bluetooth audio helmet

Type: smart cycling helmet
Size: 280 * 220 * 239 mm

Helmet weight (g) : 279 g
Speaker: stereo 2*0.5W
Tail light: 8 tail lights + 3 left leds + 3 right leds
Electrical parameters: DC 5V/5A
Battery capacity: 3.7v /380mAH (1.4wh)
The battery life is about 2 hours. The maximum battery life is 10 hours. The maximum standby time is 180 days
Age class :(male and female) adult
Color: blue, red, yellow
Exhaust valve: greater than 20
Functions: lighting control, music playing, answering and calling, real-time intercom, SOS alarm
Size: head circumference 54-62cm
Key: three buttons. Turn on (play, pause, turn off) volume + (next song) volume - (last song) music play, call answer
Bluetooth: BLE4.0 + HFP/HSP/A2DP
Bluetooth range: maximum 10 m