Descriptions: KCX_BT002 is a multi-purpose Bluetooth-compatible o module with Bluetooth-compatible o and BTcall. Support matching all kinds of for smart phones on the market players to for play music, and support telephone voice report, answering the telephone/end calls/redial recent calls, and other functions. Simply apply this decoding board into your product, it can be upgrade normal o cable products to a wireless Bluetooth-compatible o. Features: 1. Excellent durability and coexistence 2. Ensure the stability of the Bluetooth-compatible transmission through a variety of techniques 3. Intuitive LED indicator 4. Voice prompt, telephone voice reporting 5. The external for key is easy to use without the differential resistance 6. Wireless transmission distance 10 m 7. Typical applications: Home Bluetooth-compatible Speakers, Speaker Maintenance, Car player modified, Computer Speaker Upgrade, etc. Specifications: Power Supply: 3.3-5.0V Working Current: 35mA Channel: Stereo Bluetooth-compatible Version: 4.2 Working Frequency: 2400-2485MHz Receiving Sensitivity: -85dBm Size: 3.1x1.4cm/1.22x0.55" Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! No Retail Package Package Contents: 1 x Module with Connecting Cables