1. Product Overview
The NITECORE MT06MD is a compact LED penlight designed for precision tasks, particularly medical inspections. It features a Nichia 219B emitter, providing a warmer beam with a high Color Rendering Index (CRI > 90) for accurate color representation. This penlight operates on two AAA batteries and offers three brightness settings, making it suitable for various close-up applications.

Figure 1: NITECORE MT06MD Penlight, showcasing its sleek black aluminum body and pocket clip.
2. Key Features
- High CRI Nichia 219B LED emits 180 lumens max.
- Designed for medical inspections and safe for eye exams.
- Uses 2xAAA batteries for up to 35 hours runtime.
- Single button user interface.
- Slim design and pocket clip for everyday carry.
3. Setup
3.1 Battery Installation
- Unscrew the tail cap of the penlight.
- Insert two AAA batteries with the positive (+) terminals facing the head of the flashlight.
- Screw the tail cap back on securely.
Note: Ensure batteries are inserted with correct polarity to prevent damage to the device.

Figure 2: Close-up view of the NITECORE MT06MD Penlight, illustrating the head and reflector assembly.
4. Operating Instructions
4.1 Power On/Off
- To turn the flashlight ON, fully press the tail switch until a click is heard. The light will default to the 4-lumen low mode.
- To turn the flashlight OFF, fully press the tail switch again until a click is heard.
4.2 Mode Switching
The MT06MD offers three brightness levels: Low (4 lumens), Medium, and High (180 lumens).
- With the light ON, lightly press the tail switch (half-press without clicking) to cycle through the brightness modes in the order of Low → Medium → High.
- The flashlight will always start in Low mode when turned on to prevent accidental blinding.
5. Maintenance
- Clean the flashlight body and lens with a soft, damp cloth.
- If the flashlight is not used for an extended period, remove the batteries to prevent leakage and corrosion.
- Regularly lubricate the O-rings with silicone grease to maintain water resistance.
- Replace O-rings if they become damaged or worn. A spare O-ring is included.
6. Specifications
| Specification | Value |
|---|---|
| Brand | Nitecore |
| Model Name | MT06MD |
| Light Source Type | LED (Nichia 219B) |
| Brightness (Max) | 180 Lumens |
| Power Source | 2x AAA Batteries |
| Runtime (Max) | 35 hours (on Low mode) |
| Material | Aluminum |
| Color | Black |
| Product Dimensions | 5.04"D x 0.55"W x 0.55"H |
| Item Weight | 22.09 g |
| Water Resistance Level | Waterproof (IPX8 rated) |
7. Official Product Video
Video 1: Nitecore MT06MD Nichia 219B 2Xaaa - Lámpara LED (180 lúmenes), Color Negro. This video provides a visual overview of the Nitecore MT06MD penlight, demonstrating its features and operation.
8. Safety Information
Legal Disclaimer:
This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
9. Warranty & Support
Warranty Type: No Warranty information provided directly on the product page, but the manufacturer typically offers a warranty.
Warranty Description: Manufacturer.
For further support or warranty claims, please refer to the contact information provided on the product packaging or the official Nitecore website.







