1)aluminum alloy portable bluetooth speaker 2) bluetooth 2.1+EDR standard 3)6 hrs playing,bluetooth stereo output

spec	power	RMS 3W
	Signal and noise ratio	≥ 85 dBA
	bluetooth	2.1 + EDR CSR
	impedance	4Ω
	distortion ratio	≤ 1%
speaker	spec	Φ40MM 3W 4Ω
	sensitivity	350MV
	frequency Response	100Hz-20KHz
	impedance	4Ω
	power output	3W
others	power supplly	USB DC 5V/500MA
	battery	500MAH
	interface	USB,AUX,TF
	button	forward/volume+,next/volume-,play/pause,Menu,ON-OFF
	accessory	USB cable,AUX cable,user manual
	color	silver/blue/pink
	size/weight	66*66*41MM/202g

portable mini bluetooth speaker with handfree function