... racing, skiing, biking, rock climbing, paintballing and skydiving. This rugged helmet camera is the best way to capture and relive all ... time reaches 2 hours> 2GB TF card (optional), support up to 32 GB> Support USB chargingSpecification: ItemRD31 Sport CAMCamera lens2 ... cardMicro SD card (TF card)Capacity of memory cardCan support up to 32GB (max.)USB InterfaceUSB1. 1 / 2. 0Operating system2000 ...