Rockrok Rock Your LifeFeature Simple One Button Switch to Shift between TX and RX Simply Plug the 3.5mm audio port on your devices, then turn off the device and choose the mode TX(Transmitter) Convert your non Bluetooth devices such as TV, PC, CD player,iPod, MP3/MP4 into a wireless Bluetooth devices. RX(Receiver) Add Bluetooth streaming to your wired speakers or headphones and wirelessly stream music from your Bluetooth capable devices like phone, tablets or computer, etc. The latest Bluetooth 4.1 technology backward compatible with Bluetooth 3.0 or 2.0 enabled music players & devices such as iPad, iPhone, iPod touch, Android Smart Phones, tablets, etc. Easy Pairing and Automatically Connect Pair RORK BTR20 to your device once with a single button press . And RORK BTR20 will connect to the last connected device automatically when it turns on. Dual link support RORK BTR20 can connect two Bluetooth devices simultaneously,so you can share audio wireless with your friend and won't disturb others. Excellent Battery Performance RORK BTR20 provides up to 12 hours working time with a single 2 hours charge. Specification Model Rockrok RORK BTR20 2 in 1 Bluetooth 4.1 Audio Transmitter and Receiver Bluetooth Version Bluetooth V4.1 Bluetooth Profile A2DP Audio Codec Priority APT X Second SBC Third Fast stream Battery 250mAH rechargeable Li polymer battery Working Time Up to 12 hours Charging Time 2hours Accessories 1 USB Micro1 charging cable 1 3.5mm AUX cable 1 3.5mm RCA cable 1 User Manual