Sleep Earphones, Bluetooth Headscarf, Wireless Music, Sports Headband, Built-in Sleep Music Eye Mask

Bluetooth technical specifications: Headscarf Material: Polyester Bluetooth version: 5.2 Bluetooth protocol: AGHSP Bluetooth solution: Blue Message Bluetooth transmission distance: 10 meters Headphone channel: Stereo (2.0) Music playback time: 8H sound, 10 hours of medium volume Microphone distance: 1 meter Bluetooth standby time: 72H Battery capacity: 150ma/h Battery power: 0.55W Speaker impedance: 32 ohms Speaker power: 0.02W Frequency range: 2.4-2.4835GHz Sensitivity: 45db Transmission power: 6dB Audio output distortion: 0.6% Audio output signal-to-noise ratio: 93dB Charging time: 1-2 hours Input voltage: DC 5V Input current: 150mah Input power: 0.55W Product packaging information Individual weight: 70g Size: 26cm * 10cm Packaging accessories: Bluetooth headband instructions. Charging line. opp bag