Undefeated and Beats by Dre have just unveiled their collaboration in the form of a limited edition headphones in Powerbeats 2 Wireless wire. Inspired by the hip-hop culture of the 90s, sport and military fashion, Undefeated combines its signature olive drab colorway with a contrasting orange on the fastener, used to adjust the length of the chord. Besides being able to connect wirelessly to any Bluetooth device, the headphones are water-resistant. The Undefeated x Beats by Dre Wireless Powerbeats 2 are now available at Undefeated online store.