Wireless Bluetooth Headset With Noise Reduction And Long-Lasting Battery Life Comfortable To Wear Foldable USB/AUX Features: One click mode switching: Press and hold the "+" and "-" keys for 2 seconds at the same to connect between radio, Bluetooth, and memory card modes at once; Insert a memory card., automatically connect to memory card mode, and play music from the memory card. Bluetooth 5.0: Intelligent Bluetooth connection, 10m Bluetooth transmission distance, multiple systems, memory of paired devices Passive noise reduction: The passive noise reduction cavity design rejects noise and immerses you in your own space, providing you with concert like stunning sound quality and a better music experience Portable and compact: Small and portable, with a foldable design, you can carry it with you without any burden. Comfortable to wear: metal head beam, with invisible steel bars running through the entire head beam design, which can be adjusted in multiple stages according to the head shape, with natural expansion and contraction; Earmuffs are soft and skin friendly, comfortable to wear, sealed without leakage, making listening to music more comfortable. Product Description: Product name: Bluetooth headset Product color:Black Bluetooth receiving distance: 10 meters Bluetooth chip: Bluetooth version 5.0 Package size: 21x19x5.5cm/8.3x7.5x2.2 in Gross weight: 285 g/0.63 IBS Package Content: 1x Bluetooth headset 1x USB charging cable 1x Manual 1x Audio Cable