Excelvan Bluetooth Receiver, Portable Mini Bluetooth 4.0 Receiver A2DP Wireless Adapter for Home Audio Music Streaming Sound System/Bluetooth Car Kits with 3.5 mm Stereo Output Advance Bluetooth Technology: with highly performance CSR 4.0 bluetooth chip, this low consumption receiver can receive the signal at the distance of 10 meters. With strong anti-interference and stable transmission, you can enjoy the perfect sound. Built-in Microphone: Build-in noise cancellation digital microphone can ensure clear phone call and no call miss. Super battery life: With lithium ion rechargeable battery, you can enjoy up to 6 hours uninterrupted playtime. One for Two Devices: It can connect to two devices at the same time and provide more options for you. Unique Design: the unique design of water drops shape. Fashion, high class, small, and portable. Easy to operation: Very easy to understand how to use the product. Special way to switch previous or next track, and control volume. Provide optimal performance to you.