Please Note - The earbuds are branded as mi and there is a label on the front, which has either been put on badly or is a strange design feature, I'll let you decide.
This model is very compact in design, to enable wearing whilst sleeping, so the range is quite limited, quoted 10m in ideal conditions.
Specification:
Product Name:Wireless Sleepbuds Bluetooth Earbuds
Bluetooth version :V5.3
Play time:7 Hours,total 25 Hours
Transmission distance :10 meters
Product impedance :400Ω
Sensitivity (microphone):-38dbv/pa
Charging time: about 1 hour (better than 1 hour for the first charge)
Overcharge protection :0.1*250mA=25mA
Undervoltage protection :Vin=4.4v
Operating temperature/Storage temperature :-20° C to 70 ° C
Waterproof Performance: IPX5 ,charging case is non-waterproof
In the Box:
Earbuds *2; Charging Box*1;
User Guide *1; Type-C Charging Cable*1