for 3D Contoured Cup Blindfold Concave Night Sleep Block Out Light Eye Mask Bluetooth Music Play Sleeping

There are two versions to choose from, one 3D eye mask with Bluetooth music and one basic 3D eye mask without Bluetooth. Please choose what you need! Bluetooth sleep eye mask adopts V5.0 program, binaural stereo design, comfortable cotton fabric with comfortable and soft breathability. For people with symptoms ofsleep difficulties, they can let them slowly go to sleep while enjoying music, and can also reduce the outside world. The noise disturbance provides a quiet sleeping environment, whether it is work break or sleep at night, Bluetooth sleep eye mask can help improve sleep quality, a magical sleep aid artifact! Bluetooth connection: with iOS, Android, Mac and Windows Bluetooth parameters: Bluetooth version: 5.0 Bluetooth protocol: AGHSP Bluetooth solution: Blue message Bluetooth transmission distance: 10 meters Headphone channel: Stereo (2.0) Music playback time: maximum sound 7H, medium volume 10 hours Microphone distance: 1 meter Bluetooth standby time: 72H Battery capacity: 180ma/h Battery power: 0.55W Horn impedance: 32 ohms Horn 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 Maximum input voltage: DC 5V Maximum input current: 150mah Maximum input power: 0.55W