... to investigate hard-to-reach area. It helps you to diagnose broken part, weld point and released ... The 1 m Flexible tube is Waterproof with 8.5mm diameter , so that you can inspect area under water ... rechargeable Li-batteries(optional)6.Real-time record what you see and hear, supports up to 32GB SD Card7 ... design,flexible and convenient to use11.Let you explore, help you find,fun to useUser could buy as ...