Mini Speaker 1) Small cute mini speaker 2) USB interface and 3.55 DC-5V 3) Play mp3 in the TF card 4) Built-in, 3.7V(780mAh)

Speaker box/ outdoor speaker box/ USB speaker box/  portable outdoor aluminum gift mini speaker  

The main technical parameters
Speaker interface:		DC-5V/USB,LINE IN
Battery / power supply:		Built-in, 3.7V(780mAh)
Audio formats:		MP3
Output power:		4w
Peak power:		4w
Sensitivity:		90dB
Frequency Range:		90-120000Hz
Signal to noise ratio:		>85dB
Bass boost/attenuation		90dB
Treble upgrade/attenuation		80dB
Tweeter unit		90
Midrange unit		90
Main speakers:		90
Distortion:		1%
Speaker Impedance:		4Ω
Maximum SPL:		28
Appearance Material:		Aluminum alloy

N.W	90g		Product size	55*50*50mm
G.W	128g		Package size	81*51*51
Color	blue, black, red, green, silver		Accessories	Charging cable, data cable

portable outdoor aluminum gift mini speaker