The MH40 Wireless Over-Ear Headphones are the second generation of our original MH40 headphones. In celebration of Master & Dynamic's five year anniversary we created a wireless version of our very first headphones with bluetooth 5.0 technology that features a connectivity range of 100ft/30m and 18 total hours of playtime. Additionally, the MH40 wireless over ear headphones include quick charging technology with 100% charge in 80 minutes and 50% charge in 30 minutes. These wireless, over ear headphones are designed with memory foam ear pads wrapped in lambskin to deliver a comfortable listening experience. The premium leather detailing on these lightweight, durable headphones give them a vintage aviator-inspired aesthetic that is modern yet timeless. Enjoy your listening experience with the MH40 studio quality over ear headphones with noise isolation, so you'll only hear the rich, signature sound of Master & Dynamic headphones.