2.4GHz Lightning Wireless Lavalier Microphone (vč. Aku)

Size: 4.3 x 4.7 x 1.3cmChip: Professional 2.4GHz wireless microphone chipControl method: ButtonActive and passive: Active2.4G solution: Jerry AD6976M4Working system: GFSKWorking frequency: 2.4G-2.4835GHZRadio sensitivity: -38db Effective distance: Greater than or equal to 10 metersTransmitter shutdown power consumption: 2uaTransmitter power consumption (video mode): 25maTransmitter power consumption (Bluetooth mode): 30-40maReceiver power consumption: 16maReceiver charging current for mobile phone: 1000maMicrophone signal-to-noise ratio: Greater than or equal to 65dbFrequency response: 20Hz-20KHzMonitoring: One-way monitoringMicrophone: ElectretBattery: 300mAhTalk time: More than 10 hoursStandby time: (off state): 6 monthsCharging input standard: DC-5V/MAX 200+/-10mACharging time: 1.5-2 hours