-Speaker size: 40mm
-Speaker impedance: 200
-Speaker frequency: 20HZ-20KHZ
-Speaker sensitivity: 1003dB Battery type: lithium polymer battery Charging time: <3 hours Endurance time:> 15 hours
-Transmission Distance: No obstacle 10
-meters 360 degrees
-Operating Voltage: VDC 3.2-4.2V
-Battery Capacity: 800mAh
-Charging Parameters: VDC5V= 1A
-Microphone Sensitivity: -42‡3dB Microphone Directivity: Omni-directional
-Low latency: <80MS