Aluminum swing style COB drive. This drive features COB (Chip On Board) technology, rendering it very resilient to shock and weather. the 1227's diminutive size is perfect for hanging off your phone's accessory loop or your set of keys. Extruded aluminum case is available in shiny or brushed aluminum finishes. The ball chain accessory included allows for easy attachment to your phone, keys, or any of our accessories. This drive can be screen / full color printed, or laser etched.