Features: 
High definition sound 
Unique, innovative, outstanding design 
Compatible for iPod/iPhone/iPad from every generation (Bluetooth) 
Smartphone compatible(Bluetooth or line in3.5mm) 
Compatible with CD player or any other audio source through line in 3.5mm 
Rechargeable battery 
Compact and portable, convenient to carry
Specifications: 
Model: Sunglasses Bulldog 
Connection mode: Bluetooth connectivity, 3.5MM audio jack 
Interface type: USB/TF 
Signal to noise ratio: 75dB or higher 
Power supply: built-in lithium battery 
Frequency: 60Hz to 15kHz 
Battery capacity: 2000mAh 
The broadcast time: 5-10 hours 
Horn specification: 5.7cm, 8W 
Distortion rate: 1% or less 

Packing size: 13.5*12*16.5cm
Package included: 
1 x Bluetooth speaker
1 x audio line
1 x charging line
1 x retail box