Specifications:
Power supply: Built-in rechargeable battery
Working current: 37mA
Product Size: Approx. 3.1 x 3.1 x 0.5 inches (8 x 8 x 1.2 cm).
Item weight: about 33g/1.2oz
Package Size: Approx. 5.5 x 4.3 x 0.8 inches (14 x 11 x 2 cm).
Package weight: about 70g / 2.5oz
Note:
Headphone not included.
Package List:
1 x Headphone Amplifier.
1* USB cable