Features: 2-In-1 Design The Bluetooth adapter combines Bluetooth audio transmitter and receiver in one with an 3.5mm aux jack. Latest Bluetooth V4.1 chip imported from UK.Bluetooth connection is more stable and wireless range is more than 33 feet. Easy to pair and compatible with 99.9% Bluetooth devices. Updated Bluetooth 4.1 ensures strong singal transmission, high sound quality, less crackling, hissing or sound deterioration;  Dual connectionWhen used as a Bluetooth transmitter, it can be paired to two Bluetooth receivers such as headphones and speakers simultaneously. When working as a Bluetooth receiver, it can still be paired to two smartphones or tablets, but the receiver can only receive the audio from one of the two paired devices. Please note that it only supports the codec of SBC when paired with two devices simultaneously;  Small Size BUT Long Battery Life ↔ Built-in 600 mAh polymer battery, it can work up to 8 hours when used as a receiver and up to 6 hours as a trasmitter. Enjoy superior stereo sound more with longer time compared to other brands at same price;  Bluetooth Everywhere As a Bluetooth Audio Transmitter (TX Mode), turn a non-Bluetooth TV, PC, CD player, , Laptop, Tablet, MP3 / MP4 (including but not limited to) into a Bluetooth transmitter with 3.5mm jack input port. As Bluetooth Audio Receiver (RX Mode),it is ideal for home or vehicle music streaming sound system. Enjoy HIFI CD-like audio freely;  Bluetooth chip: CSR57;  Supported protocol: A2DP, AVRCP, HFP, SPP, HID;  Bluetooth distance: More than 10M(Free space);  Build-in battery: 300mAh;  Playing time: 8h as a receiver, and 6h as a transmitter;  Charging time: about 2H;  Charging input voltage/current: DC 5V/0.5A;  Input/Output connecting method: 3.5mm stereo audio port;  Compatibility: Phones and PAD of Android / IOS system, and other audio equipment with audio input interface;     Note: When used as a Bluetooth transmitter (TX mode), you should press the button until the indicator flashes blue quickly (about 9 seconds) to make it in pairing status. It is not in pairing status when the indicator turns blue for the first time.(For RX model,BT name: ELEGIANT BTI-030) When used as a Bluetooth receiver (RX mode), you should press the button until the indicator flashes blue and red in turn (about 6 seconds) to make it in pairing status;  If you wanna pair your TV with your Bluetooth headphones or Bluetooth speaker, please make sure that your TV has 3.5 mm audio output port before placing order. It can NOT be plugged into the AV output of your TV, otherwise there will be noise coming out and you will not hear the sound clearly;  If you wanna switch it from one mode to the other, please reboot it;     Packaging Included: 1 x Bluetooth transmitter Receiver;  1 x 3.5mm Audio Cable;  1 x Micro USB Charging Cable;  1 x User Manual