Bridge the gap between old and new technology with the Cobra PhoneLynx Bluetooth Cell to Home Phone Connection System (BT 215). You plug this device into your landline phone with a standard phone plug and it connects to your cell phone via bluetooth.
You can sync two different cell phones into this, enabling you to make and receive calls with your home phone using your unlimited cell phone minutes. Another huge advantage is comfort, as most landline phones are much more comfortable to hold for extended periods than cell phones. You won’t need to tote your cell phone around your house anymore if you have multiple landline phones since they will all ring just like a normal phone call to them would. It has very good reviews and is a good deal for under $50.
Bluetooth Headset, BlueFit Hands Free Wireless Earpiece / Headphones with Microphone - Compatible with iPhone, Android
Masentek M26 Bluetooth Headset V4.1 Cordless Handsfree Blue Earpiece w/ Noise Cancelling Mic for iPhone 7 Plus 6s 5s SE iPad Samsung Galaxy S7 Edge S6 S5 Note5 4 LG G5 V10 Motorola HTC Android Device