Bluetooth Speaker Features Supports answering phone calls while playing music. Built-in FM radio. Plug-in style mini speaker supports TF/SD card. Compatible with table PCs, smart phones and various kinds of Bluetooth-enabled devices. USB interface design, plug and play, easy to install and operate. Compact and lightweight, easy to carry. Support : A2DP, AVRCP, headset, handfree profile Bluethooth version : V4.0. Working Range Up to 15m. Charging Time: 2 hours. Lasting Time:10 hours. Battery Capacity: 820mAh. Package contents: 1x Mini Bluetooth Speaker. 1x USB charging cable. 1x Audio Jack cable 3.5mm. 1x User manual. Input: 5V/1.0A. Output: 5W. Weight: 250g.