Feature:1. Easy to operate: Simply connect your speakers/earphones to our devices and instantly convert your speakers/headphones into stylish wireless Bluetooth speakers/earphones.2. Wireless play: Eliminate wired connection failures, wireless connection and transmission, users can enjoy high-fidelity music anywhere in the room through wireless control.3. Portable design: Mini clip design, portable features let you carry it wherever you want.4. Support iPhone, Android and other smart phones that support Bluetooth A2DP.5. Compatible with home bass/speaker, car bass, headphones with 3.5mm audio input.Specification:1. Bluetooth version: 4.1.2. Frequency range: 2.4 GHz.3. Agreement: A2DP.4. Transmission range: up to 10 m / 33 ft.5. Power: DC 5V.6. Charging time: about 30 minutes.7. Working time: 4 hours or so.8. Size: 1.4x1.5x5.8cm.Packing list:Bluetooth audio receiver x 1Metal adapter x 1Charging cable x 1Instruction manual x 1

http://olla.gr/h-139-3.5mm-lavalier-bluetooth-audio-receiver-with-metal-adapter-white/