in humid environment or immersed in water.4. This kind of endoscope is specially used to detect automobile engine. It is not recommended to use it in water or oil, so as not to affect the effect and cause damages to the product.Specifications:Probe Lens Diameter: 5.5mm / 8.5mm (Optional)Color: BlackMain Material: ABS + Tungsten Wire Woven Mesh + Electronic ComponentsField of View: 100° (5.5mm Lens); 60° (8.5mm Lens)Depth of Field: 20-100mm (5.5mm Lens); 45-70mm (8.5mm Lens)Turning Radius: 25mmCamera Light Source: 6 Bright LED Lights (5.5mm Lens); 8 Bright LED Lights (8.5mm Lens)Sensor: 1/9" COMS (5.5mm Lens); 1/5" CMOS (8.5mm Lens)Rotation Angle: 180° in Both DirectionsMonitor Screen Size: 4.5-inchResolution: Choose 720P or 1080PLED Adjustment: 3 Levels of Brightness (Default: Brightest)Storage: Built-in 8GB TF Card (Maximum Support 32GB)Input Voltage: DC 5VBuilt-in Battery: 3 * 2000mAh Lithium BatteryCharging Port: Type-C InterfaceWi-Fi Connection: SupportAPP Download: AIIScopeSupport Language: English, Japanese, Korean, French, German, Russian, Spanish, Simplified Chinese, Traditional ChineseWaterproof: IP67 (Probe Only)Working Environment:--Tube: in the air, -10~50℃--Machine: in the air, -10~50℃; 10%-90% RH; Do not operate in the rain/ liquidsSnakelike Tube Length: Approx. 1m / 39.4inItem Size: 5 * 4 * 120cm / 2.0 * 1.6 * 47.2inMonitor Size: 14 * 8 * 2cm / 5.5 * 3.1 * 0.8inItem Weight: 417g / 14.7ozCarry Case Size: 41 * 20 * 8cm / 16.1 * 7.9 * 3.1inPackage Size: 42 * 22 * 8.5cm / 16.5 * 8.7 * 3.3inPackage Weight: 1247g / 2.75lbsPacking List:1 * Endoscope1 * USB Cable (Type-C)2 * Cleaning Pad2 * Cleaning Cloth1 * Carry Case1 * User Manual (English)