• 2-in-1 Headphones: enjoy your music wirelessly with Bluetooth 5.0 or via the detachable audio cable. • Hearing protection for children: volume limited to 85 dB. • Built-in microphone and playback/pause and volume controls to manage music and calls. • Universal compatibility: works with smartphones, tablets, and devices with Bluetooth or 3.5 mm audio output. • Rechargeable battery with up to 12 hours of autonomy in wireless mode and unlimited use with cable. • Attractive Avengers design, ideal for Captain America fans. • Lightweight, sturdy, and foldable: easy to carry in a bag. • Adjustable to fit all ages and head sizes. • Product dimensions: 19.1 cm wide, 43.2 cm high, 41.9 cm long. • Product weight: 0.26 kg.