Use: Computer, Mobile Phone, Portable Audio Player 
Channels: 2 (2.0) Special Feature: Mini, Portable, Wireless 
Output power: 3 w 
Color: black,red blue,wooden,green 
Function: Bluetooth/USB/TF card/AUX/FM Audio 
Battery capacity: 800 Mah Outside magnetic trumpet 
models: 4 Ω 3 w, 40 mm 
Frequency response:100hz-18KHZ 
Signal to noise ratio: 80 db or higher 
The bluetooth standard: 2.1 + EDR 
Bluetooth solutions: JIANRONG