Upgrade usb chargeable battery, Built-in 200mAh high-performance battery, Charge about 2-2.5 hours provide more than 9 hours playing time,In the middle of the night will not wake you up, even if you open it asleep,Halfway battery is exhausted , there will be no low battery beep will wake you up, You can sleep peacefully all night. You can adjust the speakers in the eye mask and the eye mask to the best position to make you feel more comfortable.
It can be connected to any Bluetooth-enabled device, including a Bluetooth-enabled TV, but it cannot connect two devices at the same time. If you want to connect a second device, first disconnect the Bluetooth connection of the first device.
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