2 in 1 Wireless Bluetooth Transmitter Receiver Adapter TV Stereo Audio Converter describe: Project details: This extremely portable and lightweight wireless audio transmitter and receiver is the ideal wireless audio solution for a variety of situations and applications Transmitter Mode: Wirelessly stream audio from a non-Bluetooth TV, home stereo, or CD player to Bluetooth headphones or speakers Receiver Mode: Wirelessly stream audio from a Bluetooth phone, tablet or computer to wired stereo speakers or headphones. Switch between transmitter and receiver modes with the push of a button. Connect easily using advanced Bluetooth technology and a 3.5mm audio cable (included). The ultra-portable audio streaming power supply KN319 is only 44 mm (1.73 inches) wide and weighs just 18 grams (0.63 ounces) yet packs powerful wireless audio streaming capabilities. Put this transmitter and receiver into your backpack or laptop bag and take it with you without any hassle. Wide Compatibility: With the included 3.5mm cable and 3.5mm to 2RCA cable, this receiver transmitter adapter can be widely used with your computer, laptop, home audio, headphones, smartphones, MP3 players, CD playback Devices etc. Specification: Model: KN319 Technologies: BT4.2, A2DP, AVRCP (receiver mode only) Working range: up to 10m or 33ft (no blocking objects) Charging time: 2 hours Continuous use time: 6 hours (receiving mode) or 5 hours (transmitting mode) Emetic type: lithium polymer (200 mAh) Dimensions: 44 44 12 mm Weight: 18 grams Package Included: 1 x Bluetooth Audio Transmitter or Receiver Adapter 1 x Micro USB power cord 1 x RCA cable 1 3.5mm auxiliary wire 1 user manual Note: Due to various factors such as monitor brightness and light brightness, the actual color of the item may be slightly different from the image shown on the website. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.