They’re cool, they’re organised, and they look hella stylish while doing what they do - this is Team Avengers for you! Reconnect Avengers Metal Heads BT Headphones Series 300 are as awesome as Avengers themselves! Experience enhanced bass that’ll make you move and groove and just FEEL the music as you go about your day. All these features, and yet the wireless headphones are mighty powerful too - charge just for 2.5 hours and enjoy up to 24 hours of uninterrupted playback. Enhance your hands-free experience further with these wireless headphones that are compatible with Siri and Google Assistant. They are not compatible with J.A.R.V.I.S and Friday yet, but Tony is working on it.