*Radiate Frequency: FM 49.85MHz
*Radiate power: Max120dB
*6F22(9V) battery, or used AC/DC adopter
*Audio input: 579934203700mV
Headphone
*Size"2450" recharge Li-ion battery, AC/DC recharge adopter
*Battery recharge life: 579934229100 cycle
*Receiver frequency: FM 49.85MHz
*Audio frequency response: 80Hz~15KHz(+/-3dB)
*S/N: 57993422925dB
*Out put power: 57993422930mW
*Receiver distance: 57993422920 meter(none impediment)