✔ Design with 3 knobs,Gain(Adjust the amp gain),Tone(Adjust the tone),Volume(Adjust the volume)<br><br>✔ Intimate design with power indicator light, There is a tones,on/standby(switch indicator:Turns the power on or off.When the power is on,the indicator will be lit<br><br>✔ Use conveniently and simply, Connect directly to your guitar &amp;amp; headphones without disturbing others near you<br><br>✔ 3.5mm AUX jack, Plug in your media player and play along to your favorite songs<br><br><br><strong>✔ Specifications:</strong><br>   Power Supply: Rechargeable battery (USB line included)<br>   Dimensions(W x D x H): 81 x 75 x 15.5 (mm)<br>   Weight: 52.3g(including 20g USB line)<br>   Working current:37mA<br>   Battery life:4.5 hours<br><br><br><strong>✔ Package Included:</strong> <br>   1 x Mini Headphone amp<br>   1 x USB line