GREEMATT NECKBAND Mobile Connectivity Neckband Wireless Bluetooth Bluetooth Headset with 40 hours playtime INSULATING DESIGN - Full silicone material with double layer ear cup to perfectly suppress background noise, snoring, TV sounds in living room, office and roommate sounds, etc. Ultra realistic sound - Enjoy even the smallest nuances and sound in studio quality thanks to high resolution audio, which outperforms CDs. The passion for music is noticeable in all components, so you feel the artist would appear right in front of you. No tangled cables – thanks to the practical magnetic closure, the cables do not tangle, and the headphones are always ready to use. Multi-device support - Enables wired connections when the battery runs out or devices without Bluetooth to be connected, as well as wireless mode via Bluetooth