1. Introduction and Overview
The JETBeam E28 is a versatile EDC (Everyday Carry) LED rechargeable flashlight designed for a wide range of applications, from camping and emergency situations to repairs and tactical use. It features an all-in-one lighting system with multiple modes, including floodlight, spotlight, UV, green beam, and RGB effects. Built with aviation-grade aluminum alloy, it offers exceptional durability and water resistance, making it suitable for harsh environments. Its ergonomic design and dual-button control ensure ease of use and precise light management.

The JETBeam E28 flashlight, showcasing its integrated light sources and compact design.
2. What's Included
Please check the package contents to ensure all items are present:
- JETBeam E28 Flashlight
- Type-C Charging Cable
- Lanyard
- Clip + Mounting Screws
- Hex Wrench (Allen Key)
- User Manual
- Warranty Card
- Certificate of Conformity
3. Setup
3.1. Charging the Device
The E28 flashlight is equipped with dual 3500mAh rechargeable batteries and a Type-C charging port. To charge the device:
- Locate the Type-C charging port, typically protected by a waterproof cover.
- Connect the provided Type-C charging cable to the flashlight and a compatible USB power source (e.g., wall adapter, power bank).
- The battery indicator light will display the charging status. It typically cycles through colors (e.g., red, orange, green) to indicate charge level. A full charge from 0% to 100% takes approximately 5 hours.
- Once fully charged, disconnect the charging cable and ensure the port cover is securely closed to maintain water resistance.

The battery indicator light shows the current charge level, and the waterproof Type-C charging port is visible.
3.2. Initial Use
Before first use, ensure the flashlight is fully charged. The battery status will automatically display for 5 seconds when powered on.
4. Operating Instructions
4.1. Power On/Off and Mode Selection
The E28 features a dual-button control system: a rotary dial and a side switch. The rotary dial allows you to effortlessly cycle through the main lighting modes:
- Lock Mode: Prevents accidental activation.
- Floodlight Mode: Provides a wide, even beam for illuminating your immediate surroundings.
- Spotlight Mode: Offers a focused beam for long-distance visibility.
- UV-Green Beam-RGB Combo Mode: Activates special utility and signaling lights.
- Strobe Mode: For signaling or self-defense.

Illustration of the E28's various illumination capabilities, including flood, throw, RGB, and UV light.

Comparison of the wide-angle floodlight and long-range spotlight beams, eliminating blind spots.

Demonstration of the 3300 lumens flood and 2480 lumens throw capabilities in an outdoor setting.
4.2. Brightness Adjustment
Within Floodlight and Spotlight modes, the side switch allows you to cycle through 5 different brightness levels to suit your needs. Press and hold the side switch to adjust brightness. Release to select the desired level.
4.3. Special Lighting Modes (UV, Green Beam, RGB)
When the rotary dial is set to the UV-Green Beam-RGB Combo mode, you can access:
- UV Light: For detection purposes.
- Green Beam: A tactical-grade green beam for targeting.
- RGB Effects: 7 distinct RGB effects, ideal for creating ambiance, signaling, or as a unique fill light for photos and videos.

The E28 offers 9 RGB lighting modes, including multicolor, fast meteor, gradient, and various flashing options.
4.4. Control Interface
The E28 is designed for one-handed operation. The rotary dial quickly cycles through lighting modes, while the independent side button controls power and function within each mode, allowing for instant response and precise light control even in total darkness.

The flashlight's rotary dial and independent side button enable intuitive one-handed operation.
4.5. Mounting and Hands-Free Use
The E28 offers multiple solutions for hands-free use:
- Magnetic Base: A strong tail-magnet allows the flashlight to stick to metallic surfaces, perfect for vehicle maintenance or industrial inspection.
- M5 Screw Hole: For mounting on bikes or rails (clip included).
- Dual-Direction Clip: Easily clips to a cap brim, backpack strap, pocket, or MOLLE system for multi-angle illumination.

The E28 can be mounted on bikes, used for vehicle maintenance with its magnetic base, or attached via an action camera interface.

The dual-direction clip allows attachment to a cap brim, backpack strap, pocket, or MOLLE system.
5. Maintenance
5.1. Cleaning
To maintain optimal performance, keep the flashlight clean. Wipe the body with a soft, damp cloth. For the lenses, use a lens cleaning cloth to avoid scratches. Do not use abrasive cleaners or solvents.
5.2. Battery Care
To prolong battery life, recharge the flashlight regularly, especially if it has not been used for an extended period. Avoid fully discharging the batteries frequently. Store the flashlight in a cool, dry place when not in use.
5.3. Durability and Water Resistance
The E28 is constructed from aviation aluminum alloy with a Type III hard-anodized oxidation finish, providing extreme toughness, scratch resistance, and corrosion resistance. It is rated IPX8 waterproof, meaning it can be submerged in water up to 2 meters without damage. Ensure the Type-C charging port cover is securely closed before exposing the flashlight to water.

The JETBeam E28 is IPX8 rated, ensuring it can withstand submersion in water up to 2 meters.
6. Troubleshooting
If you encounter issues with your JETBeam E28 flashlight, consider the following:
- Flashlight not turning on: Ensure the battery is charged. Check if the flashlight is in Lock Mode; rotate the dial to an active lighting mode.
- Dim light output: Recharge the battery. Clean the lens if it appears dirty.
- Mode selection issues: Ensure the rotary dial is fully engaged in the desired mode. If the side switch is unresponsive, try a full charge cycle.
- Charging problems: Verify the Type-C cable is properly connected to both the flashlight and the power source. Try a different charging cable or adapter.
For persistent issues, please refer to the warranty and support section.
7. Technical Specifications
| Feature | Specification |
|---|---|
| Model Number | E28 |
| Brand Name | JETBeam |
| Material | Anodized Aluminum |
| Power Source | Battery Powered (Dual 3500mAh rechargeable batteries) |
| Light Source Type | LED (7070 LED Floodlight, SFT-42R Spotlight) |
| White Brightness (Floodlight) | 3300 Lumens |
| White Brightness (Spotlight) | 2480 Lumens |
| Floodlight Throw Distance | 187 meters |
| Spotlight Throw Distance | 365 meters |
| Max Runtime (Floodlight) | Up to 350 hours |
| Max Runtime (Spotlight) | Up to 240 hours |
| Charging Time | 0-100% in 5 hours (Type-C) |
| Water Resistance Level | IPX8 (Submersible to 2 meters) |
| Item Dimensions (L x W x H) | 4.2"L x 1.8"W x 1"H |
| Special Features | Adjustable Light Modes, Dual Battery Power, Weatherproof, Hands-Free Use, UV/Green Beam/RGB, Magnetic Base |
8. Warranty and Support
The JETBeam E28 flashlight comes with a warranty card included in the package. Please refer to the warranty card for specific terms and conditions regarding coverage and duration. For technical support, service, or warranty claims, please contact JETBeam customer service directly through their official website or the retailer from whom the product was purchased. Keep your proof of purchase for warranty validation.