Bluetooth Speaker HIFI Portable Outdoor HD Sound Quality Music Wireless Column Stereo Music Surround Support Features: With FM function, can search radio station broadcast automatically International advanced Wireless chip and circuit design techniques,support all wireless devices. With Hi-Fi speaker, to make sure the clear and bright sound. Support and USB card, play MP3 format audio. The wireless working distanceis 10 meters. It will close automatically 30 mins if bluetooth mode no connection Specifications: Bluetooth Version:V4.2 Working Range:in 10metres Dimension:65x65mmx165mm Gross Weight:375g Loudspeaker Output:5W Signal-to-Noise:≥90dB Distortion: ≤0.5% Battery Voltage/Capacity:600mAh values for speakers :3-4hours Package Includes： 1x Bluetooth Speakers 1xUSB cable FM function allows automatic searching of radio station broadcasts Equipped with advanced wireless chip and circuit design, supporting all wireless devices HiFi speaker ensures clear and bright sound quality Supports USB card and plays MP3 format audio Wireless working distance of up to 10 meters