Features:

1) Foldable, portable, light weight, stylish 

2) Tune can control by yourself / rush on 4 AAA batteries

3) Power: 0.9W x 2

4) Dynamic range: 150Hz -18kHz

5) Input voltage: 3 - 12V

6) S/N: 70dB

7) Audio line-in jack: 3.5mm

8) Batteries: 4 x AAA

9) Weight: 200g (without packing and battery)

10) Dimensions: 207 x 53cm (extended); 112 x 62cm (foldable)