Product Overview SPECIFICATION: WIRELESS VERSION: V4.2 + EDR SPEAKER IMPEDANCE: 32 MICROPHONE SENSITIVITY: 42DB FREQUENCY: 2.40GHZ BATTERY CAPACITY: 55MAH/600MAH PLAYING TIME: 3-4 HOURS CHARGING TIME: 1-2 HOURS STANDBY TIME: 100 HOURS Reviews (No reviews yet) Write a Review