1. Support A2DP,AVRCP, Handsfree profile,FM radio 2. With FM function, can search radio station broadcast automatically 3. International advanced Wireless chip and circuit design techniques,support all wireless devices. 4. With Hi-Fi speaker, to make sure the clear and bright sound. 5. Support Micro-SD card and USB card, play MP3 format audio. The wireless working distanceis 10 meters. With AUX line in, can directly connect the outside devices,for example, tablet PC/TV/cellphones. It close automatically after 30 mins if bluetooth mode no connection. Support solar charging. Bluetooth Version:V4.2 Working Range:in 10metres Dimension:190x70.4x70.4MM Loudspeaker Output:5W*2 Signal-to-Noise: equal 90dB Distortion:less than equal 0.5% Battery Voltage/Capacity:1200mAh Battery Charging Voltage:5V /500mAH Play time values for speakers: 3-4hours (The product printed words depending on the batch, but this does not affect use) Color:Black Material:plastic Package Contents: 1 * Solar Radio Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.