speed bicycle accessories equipment smart helmet with bluetooth receiver phone answering and other functions

A smart cycling helmet with Bluetooth receiver, phone answering, and multiple functions; a Bluetooth speaker helmet

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

Helmet weight (g): 279 grams
Speaker: Stereo, 2*0.5W
Tail lights: 8 on the rear, plus 3 on the left and 3 on the right, full-color LED
Electrical parameters: DC 5V/5A
Battery capacity: 3.7V/380mAH (1.4WH)
Charging time is about 2 hours, battery life is up to 10 hours, and standby time is up to 180 days
Age group: (Men and women) adults
Color: Blue, Red, Yellow
Exhaust valve: greater than 20
Features: lighting control, music playback, phone calls, real-time intercom, SOS alarm
Size: Head circumference 54–62 cm
Buttons: Three buttons. Power on (play, pause, shut off), Volume + (next track), Volume -, (previous track), Music playback, Answering the phone
Bluetooth: BLE4.0 + HFP/HSP/A2DP
Bluetooth range: Maximum 10 meters