Neckband headphone with 40 hr playtime Bluetooth Headset Neckband hi-bass Wireless Bluetooth headphone Bluetooth Headset 4O HRS BATTERY BACKUP BLUETOOTH WIRELESS HEADSETINSULATING DESIGN 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. 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 for compatible Android devices