Power your work day or entertain the kids with up to 50 hours of wireless playback and a super-comfortable design. Long-Lasting Battery Are you looking to entertain the kids on a long road trip? That’s no problem for the Invoke Bluetooth Headphones. They offer up to 50 hours of playback time. Designed for Comfort Invoke features an adjustable headband, cushioned earpieces and a lightweight design that means you can listen comfortably for hours. Seamless Wireless Listening Enjoy a wireless audio experience with Bluetooth version 5.1. Plus, you can pause music, change tracks, adjust the volume and more with just the touch of a button. Hands-Free Calls With a built-in microphone, Invoke is perfect for taking calls on the go. You can also use the button controls to accept or reject calls. Specification: Driver: 32Ω, 40mm Bluetooth: V5.1 Operation range:10m Chipset: Actions 3015 Rechargeable Battery 90 hours play time at 50% volume/ 50 hours play time at 70% volume 800 mAh lithium polymer battery Type C USB charging input (5V 600mA) Charging time: 2.5 hours