JOYO JA-01 Mini Guitar bass Ukulele Acoustic electronic Amplifier Free Earphone and battery AMP MP3 Input 3.5mm 

Features:

• Pocket design, convenient to carry.
• Plug the CD or MP3 player in and play along.
• Easy to use, catch your inspiration anytime.
• Power indicator.
• Clean and distortion settings.

Specifications:
Brand: JOYO
Model: JA-01
Power output: 2W
MP3 input jack: 3.5mm
Earphone jack: 3.5mm
Powered by: DC 9V or 1 * 6F22 battery (not included)
Color: Black
Material: ABS
Amplifier size: 6 * 4.3 * 15cm / 2.4 * 1.7 * 5.9in
Amplifier weight: 89g / 3.1oz