Sleep Bluetooth Bandana Headband Wireless Music Sport Headband Built in Sleep Music Eye Mask Sisal Gray

1 Headscarf material tapestry2 Bluetooth version 5 03 Bluetooth protocol AGHSP4 Bluetooth program Bluetrum5 Bluetooth transmission distance 10 meters6 Headphone channel stereo 2 07 Music playback time about 7 10h8 Microphone distance 1 meter9 Bluetooth standby time about 72h10 Battery capacity 150mAh11 Battery power 0 55W12 Speaker impedance 32 ohms13 Speaker power 0 02W14 Frequency range 2 4 2 4835GHz15 Sensitivity 45db16 Transmit power 6dB17 Audio output distortion 0 6 Audio output signal to noise ratio 93dB19 Charging time about 1 2h20 Input voltage DC 5V21 Input current 150mA22 Input power 0 55W23 Packing list headband manual charging cable