ADATA HD710 500GB USB 3.0 Waterproof/Dustproof/ Shock-Resistant External Hard Drive, Black (AHD710-500GU3-CBK) Military-Grade Waterproof and Shockproof Construction Passed the stringent IEC 529 IPX7 test - Passed the stringent Military MIL-STD-810G 516.5 drop test. Blue LED Indicator Light Wrap-around USB Cable USB 3.0 Technology