Key Features & Specifications: Connectivity: Bluetooth 5.2 for reliable wireless performance and a 3.5mm audio jack for wired use. Sound Quality: Equipped with 40mm full-frequency drivers to deliver high-definition Hi-Fi sound with clear human voices and stereo effects. Battery Life: A 250mAh battery provides up to 20 hours of music playback on a single charge. Comfort: Features comfortable, breathable protein leather earmuffs and a retractable, adjustable headbeam for a custom fit. Design: A portable and foldable design makes them easy to store and carry, while a built-in microphone allows for hands-free calls. Versatility: Can be used for both music and calls, supporting various Bluetooth protocols for broad compatibility with devices like phones and laptops. only Headphones 2 months Used Buying In Netherlands