Introduction
The Big Max Zoom Golf Focus S Range Finder is designed to provide golfers with precise distance measurements, enhancing accuracy and performance on the course. This manual provides comprehensive instructions for setting up, operating, maintaining, and troubleshooting your device to ensure optimal use and longevity.

Image: The Zoom Golf Focus S Range Finder, a compact black device with textured grips and clearly marked 'SLOPE', 'OFF', and 'ON' buttons on its side.
What's in the Box
Upon unboxing your Zoom Golf Focus S Range Finder, please ensure all the following components are present:
- Range Finder
- Case
- USB Charge Cable
- Cleaning Cloth
- Instruction Manual (this document)
Setup
- Initial Charge: Before first use, connect the range finder to a USB power source using the provided USB charge cable. Ensure the device is fully charged for optimal performance. The device uses an internal rechargeable battery.
- Power On/Off: To power on the device, press the main power button (usually located on the top or side). To power off, press and hold the power button, or the device may automatically power off after a period of inactivity to conserve battery.
- Strap Attachment (Optional): If a wrist strap or lanyard is included, attach it to the designated loop on the range finder for secure handling during use.
Operating Instructions
The Zoom Golf Focus S Range Finder offers several modes and features to assist with accurate distance measurement on the golf course.
1. Basic Measurement
- Look through the eyepiece and aim the reticle at your target (e.g., flagstick, bunker).
- Press the power/measurement button once to activate the laser and display the distance.
- The device provides distances up to 600 meters with an accuracy of +/- 0.5 meters.
2. FLAG-SCAN-MODE (Pin Seeker with Vibration)
- This mode helps in locking onto the flagstick, even with background objects.
- While looking through the eyepiece, slowly scan across the flagstick. The device will vibrate slightly when it successfully locks onto the flag, confirming the measurement.
- This feature ensures you get the distance to the flag, not objects behind it.
3. SLOPE SWITCH MODE (Tournament Approved)
The Focus S features a Slope Switch button that allows you to toggle between slope-adjusted distances and straight-line distances. This is crucial for tournament play where slope-adjusted readings are often prohibited.
- Locate the physical switch on the side of the range finder labeled "SLOPE" and "OFF/ON".
- Slope ON: Slide the switch to the "SLOPE" position (often indicated by a red marker). In this mode, the device calculates and displays the slope-adjusted distance, which accounts for elevation changes to the target. This provides a "plays like" distance, helping with club selection.
- Slope OFF (Tournament Mode): Slide the switch to the "OFF" position. In this mode, the device will only display the straight-line distance to the target, without any slope compensation. This mode is approved for use in official tournaments.
- Always ensure the switch is in the correct position for your specific playing conditions or tournament rules.

Image: Close-up of the Zoom Golf Focus S Range Finder showing the 'SLOPE' and 'OFF/ON' switch, which allows toggling between slope-adjusted and straight-line distance measurements.
4. ULTRA BRIGHT DISPLAY & PERFECT VIEW
- The device features an ultra-bright display for strong contrast and clear readability in various lighting conditions.
- With 6x magnification and a 7-degree field of view, the optics provide a wide and clear image of your target.
Maintenance
- Cleaning: Use the provided cleaning cloth to gently wipe the lenses and the body of the range finder. Do not use abrasive materials or harsh chemicals. Ensure lenses are free of dust and smudges for clear viewing.
- Storage: Store the range finder in its protective case when not in use. Keep it in a cool, dry place, away from direct sunlight and extreme temperatures.
- Battery Care: Recharge the device regularly, even if not used frequently, to maintain battery health. Avoid fully discharging the battery for extended periods.
- Water Resistance: While designed for outdoor use, avoid submerging the device in water. Wipe off any moisture immediately.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low or depleted battery. | Charge the device using the provided USB cable. Ensure the charging indicator lights up. |
| Inaccurate distance readings. | Dirty lens; unstable aiming; target too far or too close; environmental interference (fog, heavy rain). | Clean the lenses with the cleaning cloth. Ensure a steady aim. Check the operating range (up to 600m). Avoid use in extreme weather conditions. |
| Display is dim or unclear. | Low battery; dirty lens; improper focus. | Recharge the battery. Clean the lenses. Adjust the eyepiece focus if available. |
| Vibration feedback not working. | Not in Flag-Scan Mode; device malfunction. | Ensure you are using Flag-Scan Mode correctly. If the issue persists, contact customer support. |
Specifications
| Brand | Big Max |
| Model | Focus S |
| Color | Black |
| Material Type | Plastic |
| Sport | Golf |
| Magnification | 6x |
| Accuracy | +/- 0.5 meters |
| Max Distance | 600m |
| Field of View | 7 degrees |
| Battery Type | Alkaline (internal rechargeable, charged via USB) |
| Package Dimensions | 17.78 x 10 x 10 cm |
| Weight | 42 g |
Warranty and Support
The Zoom Golf Focus S Range Finder comes with a manufacturer's warranty. Please refer to the warranty card included with your product or visit the official Big Max website for detailed warranty terms and conditions.
For technical support, service, or inquiries regarding your device, please contact Big Max customer service through their official website or the contact information provided in your product packaging. When contacting support, please have your product model (Focus S) and ASIN (B0CD2NDVT4) ready.
Note: Warranty terms may vary by region and retailer. Always retain your proof of purchase.





