[Flexible Neckband & Carrying Bag] weighs only 1.3 oz in flexible and durable silicone neckband, 50% lighter than any other neckband headset,you'll even forget you have them on!It also comes with a hard protective carrying bag for your easy carrying.now,you can put the headphones,charging cords,even your keys or cards in the bag,very convenient and safe.

[Bluetooth 5.0 & CSR8645 Chip]: The latest Bluetooth 5.0 + CSR 8645 chip offers enhanced sound transmission, faster pairing, more stable wireless connection and wider compatibility with Bluetooth enabled cell phones, tablets, computers, smart watches and smart speakers (e.g., Amazon Echo).

[Auto Retractable Earbuds]: One button to control, the auto retractable earbuds allows you to pull the retractable wire to the length you want and press the button can store the earbuds wire automatically, the earbuds wire can be retracted more than 5000 times. Premium quality, portable and convenient to use.

[Long Battery Life]: The powerful rechargeable battery provides up to more than 10 hours music time, 12 hours talking time, 180 hours standby time with a single charge, you can use it for all day work! When the headphones connected with your bluetooth device, you can see the status of the battery in your device.

[Call Vibration & CVC 6.0 Noise-Cancelling Mic]: Doltech bluetooth headphones will vibrate when a call comes in so that you won't miss any calls.The built-in CVC6.0 noise-cancelling microphone can reduce background noises so as to provide crystal-clear sound for hands-free calls. Warranty: Every Doltech product has 45 Days money back guarantee & One Years Warranty.