Devicewear Bluetooth Portable Wireless Stereo Speaker with Built-In Microphone for Tablets (BTS-HSD-RED) Supports A2DP, AVRCP, headset, and hands-free profiles. Easily pairs with Bluetooth devices. Bluetooth version V3.0+EDR with almost 33 Foot range. Stream music from Micro SD cards, by TF port, or connect via audio cable. Rechargeable Lithium-Ion battery for up to 5 hours of play. Receive and complete calls from the built-in microphone.