Speaker Specifications
Frequency range: 20HZ-20.000HZ
Impedance: 16 Ohm
Sensitivity: 95dB (1K Hz)
Maximum power input: 20mW
Size: 17x12mm runway type
Battery specifications
Headphones: Lithium battery 65mAh/3.7V
Charging compartment: lithium battery 500mAh/3.7V
Charging time: about 2 hours
Listening time: Approximately 8 hours (70% volume)
Time to listen to music with the charging compartment: 29 hours