The Tribit QuietPlus 71 headphones in black offer advanced active and passive noise cancellation technology. They incorporate memory foam ear cups that ensure long-lasting comfort. These headphones offer both Bluetooth and wired connectivity options. Their battery provides up to 30 hours of continuous use and their custom 40 mm dynamic drivers guarantee high-quality music playback. In addition, they have a foldable and lightweight design of only 213 grams. Features: Noise Cancelling Microphones: - The noise-cancelling technology on the Tribit QuietPlus 71 headphones combines active and passive methods. Active cancellation uses microphones to pick up ambient sound and generate inverse sound waves to neutralize it. On the other hand, passive cancellation uses the physical design of the earcups to block out external noise. Comfortable design with memory foam cups: - The ear cups, made of memory foam, conform to the shape of the ear, offering soft and breathable comfort. The ergonomic design , together with the adjustable headband, ensures that the headphones fit different head sizes, providing a comfortable experience even during long sessions of use. Use them with Bluetooth or auxiliary connection: - The QuietPlus 71 headphones are versatile, offering dual connectivity via Bluetooth 5.0 and a 3.5mm cable. Their battery provides up to 30 hours of continuous playback, ideal for long trips. They also have a fast charging function via USB-C. If the battery runs out, you can continue using them by connecting them with the auxiliary cable. 40mm drivers: - Equipped with custom-tuned 40mm dynamic drivers, the QuietPlus 71 delivers detailed, clear music reproduction. Specifications: Performance: - Headphone Type: Circumaural (Over-Ear) - Custom dynamic drivers: 40 mm - ANC noise cancellation: Active noise reduction / passive noise reduction - Design: Adjustable headband, foldable, 90° swivel - Materials: Memory foam earmuffs Connectivity: - Connectivity modes: Bluetooth and wired mode - Bluetooth: 5.0 - Bluetooth profile: HFP/HSP/A2DP/AVRCP - Wired connection: 3.5mm connector Feeding: - Battery: Lithium polymer - DC input: 5V/1A - Music playback time: up to 30 hours - Loading time: 2.6 hours - Fast charging: USB-C Dimensions and weight: - Dimensions: 0.35 x 18 x 16.6 cm - Weight: 213 g