Feature: 1. 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. 2. Great hardware, bluetooth 4.1 + EDR ensures stable signal, super‑fast data transmission and HIFI stereo sound. 3. Compatible with most speakers, connect the bluetooth receiver with any audio input devices, stereo system (car stereo systems, home audio system) & speaker through standard for RCA or 3.5 mm jack. 4. Integrated multi‑point technology, can simultaneously connect two smarts phone. Also support voice prompt. Embedded 48MIPS dual for IOS DSP co‑processor. 5. Support noise suppression and aftersound cancellation, offering you magnificent stereo sound & wonderful sound quality. 6. Compatible with lossless audio format. Support stereo codec. Support AUX output. 7. Superior wireless performance, transmit up to 30 ft away with line of sight. 8. Perfectly compatibility for IOS / for android smart phones, tablet PC and other bluetooth‑enabled devices. 9. 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 & mp3 without the hassle of cables. It is perfectly suitable for the car owners. Specification: Condition: 100% brand newItem type: Bluetooth Audio Adapter ReceiverMaterial: ABSColor: As picture shownWeight: Approx. 140g Bluetooth version: 4.1 Compatibility: for Android system, for IOS system mobile phone or tablet PC, and all Bluetooth audio devices, etc. Transmission distance: >20M (open space) Output connection: 3.5MM stereo interface Working current: 18-28MA Standby current: <400uA Charging current: 250MA Battery type: polymer lithium battery Built-in battery: 300MAH Charging time: about 3H Working time: about 8-10H Life time: >15H Charging method: Micro USB 5V/0.5A Bluetooth specification: Bluetooth V4.1+EDR Support agreement: AVRCP 1.5, A2DP 1.3, HFP 1.6, HSP 1.2, SPPV12 . Package List: 1 x Stereo host1 x Instruction1 x For RCA cable1 x 3.5 Audio heads line1 x Charging cable