Description:
* Mini USB portable FM radio compact stereo travel speaker music player with very portable design and exquisite workmanship. The size details is 4.84''*1.26''*2.64'' and the surface shell uses imported UV technology.
* MP3 Music Player supports TF Card / USB Disk; a standard 3.5mm jack for earphones if necessary, easy to plug in your iPod, Smartphone, tablet, laptop and other MP3 player or any audio source that uses a standard 3.5 mm jack. It has a large LED Screen Display, which is easy to read and very useful.
* FM Radio. Directly using number buttons to enter the channel that you want . Frequency from 88.0MHz to 108.0MHz, you can choose to your favorite channel with clear FM signal(displayed on the screen) to enjoy decent.
*The children lock function makes it safer for children to play. Built-In power amplifier with excellent sound quality. Emergency Flashlight Function is very handy for you whenever you need a light. The standard rechargeable and replaceable 18650 1500 mAh Li-ion battery
*Package Include: Rolton W405 FM Radio speaker x 1, Micro USB cable x 1, 18650 Li-ion battery (pre-placed in speaker) x 1, user manual x 1 (USB power adaptor NOT INCLUDED)

Function & Parameters:
TF Card: Yes
​USB Disk: No
FM Radio:Yes
Recording: No
Loop play back: Yes
AUX: Yes
Including Wall Charger: No

Basic function: Music/FM/Flashlight/Audio-In Jack
Material: ABS+UV
Output power: 3W
Input Power: Power Adapter/USB/ Li-ion
Sensitivity: 83db
Distortion: 1%(3.7v, 1Khz, 1W)
Working Voltage: DC 3.7V
Charging voltage: DC 5.0V---500mA
Llithium Battery Capacity: 1500 mAH
Impedance: 4 ohm
Display: LED
Speaker: 1.5 inch *1+ Passive Radiator*1
Audio Format: MP3
Firmware Upgrade: Available
Dimension: 123mm*32mm*67mm (W*D*H) Approx ( 4.84'' * 1.26''*2.66'')
Operating Temperature: -5 -- 40 degrees Centigrade
Net Weight: About 128g