It has a perfect focal length of 3-10cm，With photo and video recording function. No need to use your smartphone to connect to the WIFI and no need to download any driver software. So you do not need to worry about dirtying your expensive phone at work too.
eBay
USB Endoscope for OTG Android Phone 5.5mm Inspection Camera IP67 Waterproof with 6 LED Lights for Type C Borescope Snake Camera
Aliexpress UK
Car overhaul. Replaceable Cable. -Rigid Cable can easily shape what you need,which is better at getting over obstacles. Cable Length:1M/2M/3.5M/5M/10M/15M/20M/30M /50M/100M Rigid cable. Check water leak in wall.
eBay
5.5 7MM Android Endoscope 3 In 1 USB/Micro USB/Type-C Borescope Inspection Camera Waterproof for Smartphone
Aliexpress UK
Explore the possibilities of non-invasive inspection with our Wireless Endoscope, a high-definition waterproof borescope that seamlessly combines convenience with functionality. IOS / Android / Windows / Mac - 8mm Endoscope - Super Full HD / 2MP - 8 LED Lights.
eBay
HD1080P Endoscope 3in1 Micro USB Type-C Single Dual Camera for IOS iphone Android Phones Waterproof Pipe Inspection Borescope
Aliexpress UK
DIYers, and contractors.
eBay
2-Way Articulating Endoscope TYPE-C Slide Rod Two Way 360° 180° Rotation Steering Camera Pipe Inspection Borescope For Phones
Aliexpress UK
Endoscope TypeUSB Endoscope. Endoscope Length2M. (Almost all recently version of android device have this function). With a USB, Micro USB and Type C connectors. It can also be used for computers. Android interface, distribution USB interface adapter cable.
eBay
Wireless Visual Oral Camera 1080P HD for iPhone/Android Phones 8 LEDs Hand-held WiFi Endoscope for iOS/Type-C Inspection Tooth
Aliexpress UK
The 7.0MM TYPE-C Endoscope Camera is a versatile and high-quality medical device designed for various applications. With a 70° view angle and 2m length, this endoscope offers clear and detailed images. Its 7.0mm diameter allows for easy insertion into the patient's body, while the IP67 waterproof feature ensures durability and reliability in challenging environments. The adjustable 6 LEDs provide optimal lighting for a thorough examination. Compatible with USB and Android devices, this enteroscope provides flexibility and convenience for healthcare professionals.
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USB Endoscope for Android and iOS Phone 5.5mm Borescope Inspection Snake Camera IP67 Waterproof with 6 LED Lights For Type C
Aliexpress UK
And maintains its shape for flexibility and rigidity.
eBay
Wireless WiFi Camera Mini Video Recorder Camera Indoor Security Monitoring Camera CCTV Camera Pet Dog Camera Baby Monitor
Aliexpress UK
1 LCD Digital Endoscope. Resolution up to 1080P, used for imaging capture, video recording. Resolution: 1920 1080P. Line length: 2m, 5m, 7m (optional). 1 Protective Cap. Waterproof level: IP67(only for lens bulb).
eBay
2K HD Industrial Endoscope Single Dual WiFi Borescope Inspection Camera IP67 Waterproof Pipeline Borescope For iPhone Android
Aliexpress UK