Feature:1. Easy to carry, extremely portable, lightweight wireless audio transmitter and receiver, perfect wireless audio solution for all kinds of situations and usages.2. Transmitter mode: Wirelessly transfer audio from nonBluetooth TV, home stereo system or for CD player to Bluetooth headset or loudspeaker.3. Receiver mode: Wirelessly transfer audio from Bluetoothenabled mobile phones, tablets or computers to wired stereo, loudspeakers or headphones.4. Switching freely, just plug 3.5mm audio cable into different ports, switch between transmitter and receiver modes. Easily connect using advanced Bluetooth technology and 3.5mm audio cable(included).5. Ultra portable audio streaming power supply, this transmitter and receiver in your backpack or laptop bag and take it with you without any effort.6. Nonhot technology, can continue use for 8 hours, builtin 200mAh large capacity rechargeable Liion battery, supports charging while charging, just takes 2 hours to full charge. It is suitable for hot charging while charging. The designed of Micro USB charging port supports continuous playback when plugged in. The builtin power supply isolation form board does not generate heat when used.7. Listen to songs unlimitedly, enjoy HiFi fun, support multiple audio decoding technology, present HiFi level sound quality, let you hear more music details.8. Wide range of use, suitable for all kinds of car, trucks (with AUX audio interface), TV, computers, TV boxes, Bluetooth audio, Bluetooth headsets, most audio, power amplifiers, mobile phones and tablets PC, etc.Specification:Condition: 100 percent Brand NewItem Type: BT-13 2-n-1 Bluetooth Receiver TransmitterMaterial: ABSColor: BlackOutput Interface: 3.5mm AudioBluetooth Protocol: AVRCPA2DPBluetooth Version: 5SNR: andgt 90dbBattery Type: Polymer Lithium BatteryBattery Capacity: 3.7V or 300mAhMultipoint Connection: Support 2 In 1Forward Transmission Distance: 10MFrequency Range: 2.402GHz-2.480GHzTransmission Rate: 200MbpsWeight: Approx. 89g.Package List:1 x BT-13 2-n-1 Bluetooth Receiver Transmitter1 x 3.5mm Audio Cable1 x Micro USB Charging Cable1 x Manual