-Speaker diameter: 40MM
-Speaker impedance: 18Ohm
-Battery capacity: 1000mAh
-Battery type: polymer lithium battery
-Charging time: 3hours
-Duration time: 15-30 hours (affected by lighting and volume)
-Transmission distance: 10 meters, 360 degrees
-Working voltage: 3.7V
-Charging voltage: DC5V-1A
-Microphone sensitivity: -403dB
-Directionality: omni-directional
-Low latency: 20MS
-Color: Black , GOLD