1. Product Overview
The REVASRI NK-1000 is a versatile laser rangefinder designed for hunting, golf, and archery. It features multiple measurement modes, high accuracy, and a compact, portable design with a rechargeable battery.

Figure 1: REVASRI NK-1000 Hunting Laser Rangefinder, front view.
Key Features:
- 7 Measurement Modes: Ranging, All-in-One, Scanning, Speed Measurement, Two Points Height Measurement, Golf Distance Compensation, and Storage.
- Mode Memory Function: The device remembers the last used mode upon restart.
- Continuous Scan: Measure multiple targets with a single press.
- High Accuracy: ±1 Yard distance accuracy and ±1 degree angle accuracy.
- Clear Optics: 6.5X magnification with multilayer coated glass lens and transmissive LCD display.
- Rechargeable Battery: Built-in Li-ion battery with USB-C charging.
- Compact and Portable: Lightweight design (120g) with rain-proof construction.
2. Setup
2.1 Unboxing and Package Contents
Carefully remove all items from the packaging. The package should contain the following:
- 1 x REVASRI NK-1000 Laser Rangefinder
- 1 x Rangefinder Case
- 1 x USB-C Charging Cable
- 1 x Lens Cleaning Cloth
- 1 x Lanyard
- 1 x User Manual (this document)

Figure 2: Rangefinder and included accessories.
2.2 Charging the Battery
The REVASRI NK-1000 is equipped with a built-in rechargeable lithium-ion battery. Before first use, ensure the device is fully charged.
- Locate the USB-C charging port on the side of the rangefinder.
- Connect the provided USB-C cable to the rangefinder and the other end to a compatible USB power source (e.g., computer, wall adapter).
- The charging indicator light will illuminate during charging and turn off when fully charged.

Figure 3: USB-C charging port location.
Video 1: Demonstrates the charging process and various functions of the REVASRI NK-1000 rangefinder.
2.3 Adjusting Focus
To ensure a clear view of the target and the in-view LCD display, adjust the eyepiece focus.
- Look through the eyepiece.
- Rotate the eyepiece clockwise or counter-clockwise until the display and target appear sharp and clear.

Figure 4: Rotating the eyepiece to adjust focus.
3. Operating Instructions
3.1 Power On/Off
Press the power button once to turn on the device. The device will automatically shut down after 30 seconds of inactivity to conserve battery.
3.2 Mode Selection
The REVASRI NK-1000 features 7 distinct measurement modes. Press the "MODE" button to cycle through the available modes. The device will remember the last used mode when powered off and on again.

Figure 5: Overview of the 7 measurement modes.
3.3 Measurement Modes Explained
- Ranging Mode: Measures the straight-line distance to a single target.
- All-in-One Mode: Displays angle, height, horizontal distance, and straight-line distance simultaneously.
- Scanning Mode: Allows continuous measurement of multiple targets by pressing and holding the power button.
- Speed Measurement Mode: Measures the speed of a moving target.
- Two Points Height Measurement Mode: Calculates the height between two points.
- Golf Distance Compensation Mode: Provides slope-adjusted distances for golf. This mode also features target lock for easily acquiring flags or other small targets.
- Storage Mode: Stores previous measurement data.

Figure 6: All-in-One mode display showing multiple measurements.
Video 2: Demonstrates the REVASRI rangefinder in a hunting scenario, showcasing its camouflage design and ease of use.
4. Maintenance
Proper care and maintenance will extend the lifespan of your REVASRI NK-1000 rangefinder.
4.1 Cleaning
- Use the provided lens cleaning cloth to gently wipe the objective and eyepiece lenses.
- Do not use abrasive cloths, paper towels, or chemical cleaners, as these can damage the lens coatings.
- For the body of the device, use a soft, damp cloth. Avoid excessive moisture.
4.2 Storage
- Store the rangefinder in its protective case when not in use.
- Keep the device in a cool, dry place, away from direct sunlight and extreme temperatures.
- Avoid storing in areas with high humidity.
4.3 Battery Care
- Charge the battery regularly, even if the device is not used frequently, to maintain battery health.
- Avoid completely draining the battery before recharging.
- Use only the provided USB-C cable or a certified equivalent for charging.
5. Troubleshooting
If you encounter issues with your REVASRI NK-1000, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Cannot get a reading. | Target is too close (minimum range is 5 yards), too far, or obscured. Measuring through glass. | Ensure target is within 5-1000 yards. Avoid measuring through glass. Ensure a clear line of sight. |
| Reading seems inaccurate. | Environmental factors (rain, fog, strong light, heavy dust). Aiming at background instead of small target. | Environmental conditions can affect laser transmission. For small objects, ensure precise aiming at the target itself. |
| Device does not power on. | Battery is depleted. | Charge the device using the provided USB-C cable. |
| Display is unclear or blurry. | Eyepiece focus is not adjusted. | Rotate the eyepiece to adjust the focus until the display and target are clear. |
6. Specifications
| Feature | Detail |
|---|---|
| Model | NK-1000 |
| Laser Class | 905nm Class 1 (safe laser), <5mW output |
| Ranging Method | Semiconductor laser ranging |
| Ranging Scope | 5-1000 Yards |
| Ranging Accuracy | ±1 Yard |
| Angle Range | ±90° |
| Angle Accuracy | ±1 Degree |
| Display Mode | In-view LCD display |
| Magnification | 6.5X |
| Objective Lens Diameter | 24mm |
| Exit Pupil Diameter | 3.8mm |
| Exit Pupil Distance | 12mm |
| Focusing Mode | Manual Focusing Eyepiece |
| Power Supply | Built-in Lithium Battery |
| Working Temperature | -20°C to 60°C |
| Operating Humidity | ≤80% |
| Product Size | 96mm x 34mm x 67mm (3.8 x 1.4 x 2.6 inches) |
| Item Weight | 120g (4.23 ounces) |
| Water Resistance Level | Rain-proof (IP54) |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
7. Warranty & Support
7.1 Warranty Information
The REVASRI NK-1000 Laser Rangefinder comes with a 1-Year Warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or improper maintenance.
Please retain your proof of purchase for warranty claims.
7.2 Customer Support
For technical assistance, warranty claims, or any questions regarding your REVASRI NK-1000 Laser Rangefinder, please contact REVASRI customer support through the retailer where the product was purchased or visit the official REVASRI website for contact information.
Note: Contact information is subject to change. Please refer to the official brand channels for the most current support details.







