eranton Portable A2dp Bluetooth 4.1 Wireless Music Audio Receiver Adapter Auxiliary 3.5mm Stereo Output Handsfree Carkit for Car Home Stereo Support siri , hands free phone call with built-in high quality microphone Bluetooth 4.1 supports A2DP V1.2&AVRCP Class 2 features clear conversation effect and excellent sound quality,no lag Multipoint connection:can be connected with 2 phones at the same time so you can stream music either in your phone or tablet freely to your speaker (when use siri or voice command function, we suggest you connect the receiver with one phone) . Transmits up to 33 feet away , can reach 66 feet in open space without obstacle Up to 8 hours music playback due to low-power consumption bluetooth 4.1 tech and efficient built-in Li-battery. [There's a Newer version of this item: http://www.amazon.com/dp/B01CEEG2CO ]