?The Bluetooth Receiver is specially designed for Car Stereo systems and Home Audio System. And£¬ it can change the traditional Car Stereo systems and Home Audio System into Bluetooth-enabled ones£¬ and easy to pair with Bluetooth-enabled Smart Phones£¬ laptop£¬ tablet£¬etc. With this product£¬ you can greatly enjoy music from your phone£¬ laptop &amp; MP3 without the hassle of cables. It is perfectly suitable for the car owners.? <br><br><strong>Features:</strong> <br>Magical Function: The Bluetooth Receiver Change the traditional Speakers into Bluetooth-enabled ones. After paired£¬ play music wirelessly from your Bluetooth-enabled Smart Phones£¬ Laptop£¬ Tablet£¬ etc. Support Automatic Re-connection.? <br>Great Hardware: Bluetooth 4.1 + EDR ensure stable signal£¬ super-fast data transmission and high-fidelity stereo sound. ?? <br>Compatible with Most Speakers: Connect the Bluetooth Receiver with any Audio Input Devices£¬ Stereo System (Car Stereo Systems£¬ Home Audio System) &amp; Speaker through standard RCA or 3.5 mm jack.? <br>Integrated Multi-point Technology: Can simultaneously connect two smarts phone. Also Support Voice Prompt. <br>Embedded 48MIPS Dual MAC DSP co-processor. ? <br>Support Noise Suppression and Echo Cancellation£¬ offering you Magnificent Stereo Sound &amp; Wonderful Sound Quality.? <br>Compatible with Lossless Audio Format; Support Stereo Codec; Support AUX Output.? <br>Superior wireless performance; Transmit up to 30 feet away with line of sight. <br>Perfectly Compatibility: For iOS / Android Smart Phones£¬ PAD and other Bluetooth-enabled Devices. <br><br><strong>Specifications:</strong> <br>Model Number: B2 <br>Bluetooth Version: Bluetooth 4.1 + EDR£¬ Class 2.? <br>Support Bluetooth Protocols: AVRCP£¬ A2DP 1.3£¬ HFP£¬ HFP1.6£¬ HSP1.2£¬ SPPV1.2.? <br>Bluetooth Operating Distance: &gt; 10m <br>Output Connection Way: 3.5mm Stereo Interface. ? <br>Working Current: ¡Ü 20mA ? <br>Standby Current: ¡Ü 20uA? <br>Built-in Battery: 300mAh <br>Charging Current: 250mAh <br>Working Time: 8 ~ 10 hours <br>Standby Time: 15 hours? <br>Charge Time: 3 hours <br>Charge Port: Micro USB 5V / 0.5A <br>Color: Black <br>Item Size: 11.0 * 6.0 * 1.5cm / 2.17 * 0.98 * 0.39in <br>Item Weight: 12g / 0.43oz <br>Package size: 14.0 * 11.5 * 3.0cm / 4.33 * 2.95 * 0.79in <br>Package weight: 41g / 1.47oz <br><br><strong>Package List:</strong> <br>1 * Bluetooth Receiver <br>1 * 3.5mm Connection Cable <br>1 * 3.5mm to RCA Audio Cable <br>1 * USB Cable? <br>1 * English User Manual