Product Name: Smart Bluetooth Bike Helmet
Bluetooth: BLE4.2
Bluetooth distance: no occlusion > 10 meters
Speaker: Stereo 2X0.5W
Button: three buttons, boot (play, pause, shutdown)
Charging interface: Micro USB
Life time: 10 hours (MAX)
Standby time: > 180 days
Product size: 280 * 220 * 239
Product weight: 270g (+/- 5%)
Size: suitable for head circumference 58-62cm
Color: white
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