1. Light And Comfortable, No Sense Of Wear 2. The Depth Of Noise Reduction Is Fully Upgraded, -48db+4000hz Ultra-Wideband, Allowing You To Experience A Noise Reduction Experience 3. Severe Noise Reduction Environment, -50db Allows You To Enjoy Clear Calls In Seconds Even In Noisy Environments 4. Balance-Noise Reduction Environment 5. Each Headset Has Built-In Dual Microphones + Ai Dnn Anti-Wind Noise Algorithm, Which Greatly Improves Call Quality And Allows High-Definition Calls In Noisy Environments. Bluetooth Protocol:5.4 Battery Life:More Than 8 Hours Waterproof Performance:IPX4 Usage:Earplug Type Transmission Range:10 Meters Function:Long Battery Life, Call Function, Music Support Chip Type: Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use. Type:B:Classic Black Colour:As Shown Material:PC+ABS Package Contents: 1 Pair * Bluetooth Headphones 1 * Charging Compartment Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.