First we carried our mobile phone everywhere. Then when phones could store music, we carried earphones everywhere. Now that phones have become miniature computers, the need to carry extra batteries with you has arisen. The O2 headphones concept brilliantly combines wireless earphones with a power bank in a way that make the power bank a carrying + charging case for the earphones. The case comes as a rather dapper looking pocketable slab of matte black metal. The earphones wrap elegantly around the power bank and nestle in the two docking points on the power bank’s body. What an ingenious way to store earphones and supplementary battery power together! Designer: Shane Li