Product information: <br><br> Color: black <br><br> Operating range: maximum 10 m (without obstacles) <br><br> Pairing name: KN321 <br><br> Charging time: 2 hours <br><br> Interface: USB 3.5mm audio <br><br> Battery type: Lithium polymer (200 mAh) <br><br> Size: 44 × 44 × 12 mm <br><br> Weight: 18g <br><br> Packing list: 1 x Bluetooth 5.0 audio transmitter / receiver adapter, 1 x micro USB -Power cord, 1x cinch cable, 1x 3.5 mm additional cable, 1x user manual <br><br> <br><br> Features: <br><br> <br><br> 1. This portable, lightweight wireless audio transmitter and receiver is an ideal wireless audio solution for various situations and applications <br><br> <br><br> 2. Transmitter Mode: Stream audio wirelessly from a non-bluetooth TV, stereo, or CD player to a bluetooth headset or speaker. <br><br> <br><br> 3. Receive mode: wirelessly transmit audio from bluetooth enabled cell phones, tablets or computers to wired stereos, speakers or headphones <br><br> <br><br> 4. Just press the switch to toggle between transmitter and receiver modes. Use the advanced Bluetooth technology and 3.5mm audio cable (included) for easy connection. <br><br> <br><br> 5. Ultra-portable audio streaming power supply <br><br> KN321 is only 44 mm (1.73 inches) tall and weighs only 18 grams (0.63 inches), but has powerful wireless audio streaming capability. Put this transmitter and receiver in your backpack or laptop bag and take it with you with ease. <br><br> <br><br> 6. Wide compatibility: This receiver-transmitter adapter is equipped with a 3.5mm cable and a 3.5mm 2 cinch cable and can often be used in computers, laptops, home stereo systems, headphones, smartphones, MP3 players, CD Players etc. can be used.<br>Product information:<br>Color: black<br>Operating range: maximum 10 m (without obstacles)<br>Pairing name: KN321<br>Charging time: 2 hours