OD, Length, Articulation, Bending angle, Model: 4.5mm, 1meter, 2-way, 170, TP1000AS451 5.5mm, 1~3meter, 2-way, 120~170, TP1000-AS551 Insertion Tube & Light Source Specs: 1. Image Sensor: CMOS Image Sensor 2. Resolution (Dynamic / Static): 320(H)*240(V) / 640(H)*480(V) 3. Size Tip (Insertion Tube) Diameter: 5.0mm (0.196") 4. Insertion Tube Length: 1M-30M 5. Frame Rate: -30 fps 6. S/N Ratio: 42dB 7. Exposure: Automatic 8. White Balance: Fix 9. Field of View (FOV): 91° 10. Depth of Field (DOF): 1.5cm~10cm 11. Light Source: 6 White LEDs. System Specs: 1. Power: DC5V 2. Display: 3.5"TFT LCD Monitor 320*240 Pixels 3. Interface: Mini USB 1.1/ AV out/ AV in/ 4. Battery: Rechargeable Li-Polymer Battery (3.7V) 5. Video Out Format: NTSC & PAL 6. Recording Medium: SD card (capacity can be up to 2G) 7. Compression Format: MPEG4 8. Still Image Storage Format: JPEG (640*480) 9. Video Recording Format: ASF (320*240) 10. Language: English. Function: Quick Video Recording Quick Snap Quick Review AV Out Video Viewer.