<b>Product Details:</b> <br> Brand Name: Bluedio<br> Model: Hurricane-HI<br> Bluetooth version: 5.0<br> Frequency range: 2.4 GHz-2.48 GHz<br> Supporting protocols: A2DP, AVRCP, HSP, HFP<br> Frequency response range: 20Hz-20KHz<br> Standby time: about 1000 hours<br> Music/Talk time: about 5 hours<br> Charging time: about 1 hour for headphones, 2 hours for charging box<br> Input voltage / current: 5V /> 100mA<br> Output power: 7mW + 7mW<br> With microphone: Yes<br> Resistance: 32Ω<br> Style: in-ear<br> Communication: Wireless<br><br> <b>12 Months Worry-free Warranty:</b> <br> If you have any questions about the quality of the product, please contact us via email, we will be happy to solve the problem for you. <br><br> <b>Package Included:</b> <br> 1 x Bluedio True Wireless Bluetooth Earphones<br> 1 x Charging Case<br> 4 x Interchangeable Ear Tips<br> 1 x USB Charging Cable<br> 1 x User Manual<br><br>