Highlights: 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 Play time values for speakers: 3-4hours Product Description: 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 Micro SD card and USB card, play MP3 format audio. The wireless working distances 10 meters. It will close automatically after 30 mins if Bluetooth mode no connection Colors: Random What’s in the box: 1x Bluetooth Speakers, 1xUSB cable Weight: 0.4 SKU: 210228070855