Astrum HT380 is a wireless active noise cancellation V5.0 Bluetooth headset with built-in Aux-In port. The 40mm driver is to deliver precision for clear bass & stereo sound for a heart-warming experience. High-capacity lithium batteries with low power consumption provides playtime upto 8 hours, depending on volume, comfortable & soft cushioned ear pads are designed to ensure punchy bass experience with comfort for using over-ears headphone for extended hours. Headband of HT380 is ergonomically design to provide much lesser clamping force compared to other headsets. The latest version of 5.0 Bluetooth chip is capable to handle the high quality sound at high-speed transmission, over a distance of 10mtr for clear & crystal sound experience. The headphone is compatible with any Bluetooth device to play the media files. The headphone gets charged in approx. 2 hours by a charger with Micro USB cable.