https://alexnld.com/product/5-5mm-lens-usb-borescope-snake-inspection-camera-android-mobile-phone-10m-5m-2m-1m-soft-wire/?hilite="AN99 2 in 1 IP67 Waterproof Micro USB USB HD Endoscope Snake Tube Inspection Camera for Parts of OTG Function Android Mobile Phone, with 6 LEDs, Lens Diameter: 7mm (Length: 2m)"