Specifications:

• Frequency response:20Hz~20kHz
• Sensitivity:105dB
• lmpedance:16ohm
• Headphone battery type:lithium-ion polymer battery(35mah/3.7V)
• Headphone charging time: within 1 hour
• Charging compartment battery type:lithium-ion polymer battery(300mah/3.7V)
• Charging time of charging compartment: within 2 hours