1)Item No: E-8819. 2) 220V/110V AC power supply, the available distance up to 100 meters in the open area. 3)Fashion chord, active music sound. 4)Top IN blue, remarkable appearance. 5)The dimension of transmitter: 8. 5*4*1. 5cm. 6)The dimension of receiver: 10*6*2. 9cm.HS Code: 85311000 Trademark: EXPERT Model: E-8819 Productivity: 500000