Ofeely® Original Antique Handmade Ultra-Portable Wireless Bluetooth Speaker, Powerful Sound with Build in Dual Magnetic, Works for Iphone, Ipad Mini, Ipad 4/3/2, Itouch, Blackberry, Nexus, Samsung and Other Smart Phones and Mp3 Players (Beer Keg)

Bluetooth function
Output power: 3W
Operating voltage: 3.7V
Frequency response: 80Hz-20KHz
SNR: ≥85dB
The degree of distortion: <0.3%
Audio input: Bluetooth, TF card, AUX, USB soundcard
Support MP3: Bit rate, 32Kbps-320Kbps
Speaker unit: 40mm, dual magnetic 16 core, 4Ω3W
Input Power: Built-in polymer rechargeable battery 500mAh 3.7V or external DC5V
Input Sensitivity: 450 ± 100mV
Dimensions: 88D × 90Hmm
Weight: about 300g

Package include:
1 x Bluetooth speaker
1 x Manual
1 x Charging cable
1 x Audio cable