Here is a pair of Bluetooth 5.0 headphones with bone conduction technology and Walkie-Talkie capability that help you stay connected. The Sgast headphones are ready for multi-way group chats through 5 channels. They have a 300m walkie-talkie range.
The Sgast headphones last up to 8 hours on battery (300mAh). Their open-ear design let you stay aware of your surroundings as you exercise or listen to music. This project is currently getting funded on Kickstarter. You can find out more about it here.