Introduction
This manual provides detailed instructions for the proper use and maintenance of your JETBeam JET-II MK Everyday Carry Flashlight. Please read this manual thoroughly before operating the device to ensure optimal performance and longevity.
The JETBeam JET-II MK is a compact and powerful LED flashlight designed for everyday carry. It features a CREE XP-L HI LED, capable of producing up to 510 lumens, and is powered by either a single CR123A or 16340 battery. Its intuitive twist interface allows for easy activation and brightness adjustment across multiple output levels.
Package Contents
Verify that all items are present in your package:
- JETBeam JET-II MK Everyday Carry Flashlight
- Pocket Clip (pre-installed or included separately)
- Spare O-rings
- User Manual
An image showing the JETBeam JET-II MK flashlight, a compact black aluminum device with a textured grip, a pocket clip, and the model number 'JET-II MK' visible on its body. The front bezel with the LED is also visible.
Setup
Battery Installation
- Unscrew the head of the flashlight counter-clockwise to open the battery compartment.
- Insert one (1) CR123A or 16340 battery with the positive (+) terminal facing towards the head of the flashlight.
- Screw the head back on clockwise until it is finger-tight. Ensure the O-ring is properly seated to maintain water resistance.
Operating Instructions
Power On/Off and Brightness Adjustment
The JET-II MK utilizes a twist interface for operation:
- To Turn On: From the off position, twist the flashlight head clockwise. The light will activate in the lowest brightness mode.
- To Change Brightness: Continue twisting the head clockwise to cycle through the brightness levels (Low → Medium → High → Turbo).
- To Turn Off: Twist the flashlight head counter-clockwise until the light deactivates.
Brightness Modes and Runtimes
| Mode | Lumens | Runtime (approx.) |
|---|---|---|
| Turbo | 510 | 45 minutes |
| High | 100 | 1.5 hours |
| Medium | 5 | 15 hours |
| Low (Firefly) | 0.5 | 150 hours |
Note: Runtimes are approximate and may vary based on battery type, age, and environmental conditions.
Maintenance
- Cleaning: Periodically clean the threads and O-rings with a clean cloth. Apply a thin layer of silicone grease to the O-rings to maintain water resistance.
- Battery Care: Remove batteries from the flashlight if it will not be used for an extended period to prevent leakage and damage. Store batteries in a cool, dry place.
- General Care: Avoid dropping the flashlight or subjecting it to severe impacts. Do not disassemble the sealed head to prevent damage to the LED and internal components.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. | Battery inserted incorrectly, battery depleted, loose head/tailcap, dirty contacts. | Check battery polarity, replace battery, tighten head/tailcap, clean battery contacts. |
| Inconsistent brightness or flickering. | Low battery, loose connections, dirty contacts. | Replace battery, ensure head is fully tightened, clean battery contacts. |
| Water ingress. | Damaged or improperly seated O-ring. | Inspect and replace O-rings if damaged. Ensure O-rings are properly seated and lubricated. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | JET-II MK |
| Light Source | CREE XP-L HI LED |
| Maximum Brightness | 510 Lumens |
| Beam Distance | 138 meters |
| Power Source | 1 x CR123A or 1 x 16340 Battery |
| Material | Anodized Aluminum |
| Color | Black |
| Overall Length | 2.56 inches (65 mm) |
| Item Weight | 2.4 ounces (68 g) |
| Water Resistance Level | Water Resistant |
Warranty Information
JETBeam products are typically covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your product or visit the official JETBeam website for specific warranty terms and conditions. Keep your purchase receipt as proof of purchase.
Customer Support
For technical assistance, troubleshooting not covered in this manual, or warranty claims, please contact your authorized JETBeam dealer or visit the official JETBeam customer support portal. Contact information can usually be found on the product packaging or the official brand website.
Safety Information
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, please visit www.P65Warnings.ca.gov.
- Do not shine the flashlight directly into eyes.
- Keep out of reach of children.
- Use only recommended battery types.
- Dispose of batteries according to local regulations.
