Specifications:

• Antenna: Ceramic Antenna
• Battery capacity: 70mAh/LIR1254
• Battery full voltage: 4.1-4.25V
• Bit rate: 64Kbps
• Boot current: 10-15MA
• Charging input voltage: 3.4V-5.4V
• Charging port: Type-C
• Frequency range: Bluetooth (BLE)
• Item Type: Microphone Amplifier
• Model Number: Noise Cancelling Type C Microphone
• Operating temperature: -10 to 45 degrees Celsius
• Origin: CN(Origin)
• Package: Yes
• Receiver working current: 21-22MA
• Sample rate: 32K
• Sensitivity (microphone): -42DB
• Shutdown current: 2-4uA
• The working current of the transmitter: 11-14mA
• Transmission delay: 15-20MS
• Transmission distance: 25 meters in a straight line, about 10 meters away from obstacles
• Working time: about 5 hours