... mount onto your bic... Bluetooth Hands Free Receiver and LED Head Light for Bicycle - Built in Speaker ... the built in high end speakers and microphone! And when night approches, don't fret ... mAh: 1500mAH, 5.5 hourHeadlamp * Lumens: 100-110 * LED power: 1W * Light modes: high, low, flashingDimensions * ... dejn-HealthLifestyle/ Bluetooth Hands Free Receiver and LED Head Light for Bicycle with Built in Speaker ...