Welcome to our store! 1Multifunction: Mobile phone handset can be used to answer a call hang up a call, reject a call, redial, power off, etc. The volume can be adjusted. 23.5mm and USB C: Suitable for all devices with audio jacks or USB C connectors (included).(for Opis Lightning adapter is required for iPhone 7/7+ and later) 3Radiation Proof: Just plug in the device and use it, this handset can reduce radiation, and with a 1M/3.28FT extension cable, you can easily answer calls. 4Excellent Audio Quality: Built in HD speaker and microphone old fashioned high volume handset style and excellent microphone make calls fun! 5Easy to Use: Not a Bluetooth phone and no pairing is required. It's just a simple plug and phone connection. Your phone will automatically use the handset! Make vour phonel retro!Item Type: Cell Phone HandsetMaterial: ABSInterface: 3.5mm+USB CChannel: StereoSpeaker: Built-in.wang-edit-text{font-family:'Arial' !important;}.wang-edit-text table {border-top: 1px solid #000;border-left: 1px solid #000;}.wang-edit-text table td,.wang-edit-text table th {border-bottom: 1px solid #000;border-right: 1px solid #000;padding: 3px 5px;}.wang-edit-text table th {text-align: center;}1 x Handset1 x Adapter(Customer Satisfaction) - is our priority. If you notice any problems with the products after receiving the goods, such as damaged goods or incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory after-sale service.Thanks for seeing me, I hope I can help you. Good life to you.