1.Updated Version: Bluetooth receiver designed for non-Bluetooth headset/speaker/car/home stereo systems with 3.5mm auxiliary adapter. Make your non-Bluetooth device instantly a wireless Bluetooth device. This upgrade solves most of the Bluetooth receiver's usage problems in the market (such as support for stereo, charging, high quality sound, longer usage time), pen holder design, carrying Convenient, let you enjoy wireless music anytime, anywhere 2.Intelligent Design: Adopted bluetooth 42 CSR chip for providing more stable and faster transmission with less power consumption, It can represent excellent audio performance, speak clearly, use the built-in microphone for hands-free calling, and make it easy for friends to chat. 8 hours of talk and play time, or up to 120 hours on standby on background 3.Easy to Use: Change the volume, play/pause music, or skip tracks with ease; Apple devices can even activate Siri with the click of a button. Available up to 33 feet / 10 meters range connection, Connect 2 devices at the same time. Let you not miss a phone call while enjoying wireless music 4Compatibility: Bluetooth stereo audio receiver adapter is suitable for most Bluetooth-enabled devices such as iPhone, iPod, iPad,Samsung,LG,Huawei,HTC and other Android smartphones. Simply plug in any with 3.5mm aux audio jack devices such as for speaker, headphones, car/home stereo so your device instantly has wireless Bluetooth