The Oasis Scientific Vividia W2240 Wi-Fi/USB Wireless 2-Way Articulation Borescope for Diesel Engines features a small camera (less than 4mm/0.157" diameter) at the end of a 39.4" long probe. The small diameter is ideal for diesel engine applications such as cylinder inspections. The probe camera can be bent in two directions with a turning wheel from 0 degrees (front view) to 180 degrees (rear view) each direction. The insertion probe is flexible for easy operation and insertion. Users are able to record and save photos and videos. The built-in Wi-Fi and USB connection is compatible with iPhones, iPads, Android devices, Windows PC, MacBook, and Chromebook.