Model Name: SX21Input voltage: 5VMicrophone battery: 110mAhCharging compartment battery: 800mAhBattery life: 6 hoursSignal-to-noise ratio: 64DBMTransmission delay: 30MSSensitivity: -42 dBFrequency response range: 20-20KHZTransmission distance: 20-30m (barrier-free) Download There have been no reviews for this product yet.
