From the first tee to the final hole, the COOLSHOT 20 GIII has you covered for every important distance on the course. This compact golf laser rangefinder is the smallest and lightest model in the COOLSHOT lineup, making it the ideal choice for golfers who want fast, simple, and precise measurements round after round — without the bulk. Approved for use under the Rules of Golf, it delivers reliable actual-distance readings so you can focus entirely on your game.
Nikon's LOCKED ON QUAKE function eliminates all guesswork when targeting the flagstick. When the rangefinder successfully measures the distance to the closest object — the pin — rather than background trees or structures, the body vibrates gently to confirm the reading. In single-measurement mode, overlapping objects are handled by displaying the distance to the nearest subject with a brief vibration. In continuous mode, the body vibrates whenever the displayed reading shifts to a closer object. First Target Priority mode works in tandem with LOCKED ON QUAKE: it actively prioritises the flagstick in front of any background distractions, so your distance reading is always to the target that matters most.
Nikon's century-long expertise in precision optics is packed into the COOLSHOT 20 GIII's 6× monocular. Multiple layers of anti-reflective coating applied to every optical surface maximise light transmission, delivering a bright, sharp, and contrast-rich image in a wide variety of lighting conditions — from overcast morning rounds to bright afternoon play. An adjustable dioptre correction of ±4 m⁻¹ allows each golfer to fine-tune focus to their individual eyesight. The effective objective diameter of 20 mm produces a 3.3 mm exit pupil diameter — enough to maintain a clear view even when there is slight hand movement during measurement.
The continuous measurement function transforms a single trigger press into a real-time terrain survey. Simply hold the power button pressed for up to 8 seconds and sweep across the hole — the display updates continuously as you pan from bunker to water hazard to the green, giving you a complete picture of distances to every obstacle in seconds. This scanning capability is especially valuable on unfamiliar courses or when planning a layup strategy, letting you gather multiple key distances in a single, fluid motion without needing to re-aim and re-press for each target individually.
At just 118 g (without battery) and dimensions of 91 × 73 × 37 mm, the COOLSHOT 20 GIII is the smallest and lightest model in the entire COOLSHOT range — barely bigger than a modern smartphone. Its crosshatch-textured grip section ensures a secure hold even in wet conditions, while the rainproof IPX4-equivalent construction means a shower will not interrupt your round or damage the device. The long eye relief of 16.7 mm means eyeglass and sunglass wearers can use the rangefinder comfortably without removing their glasses. Simple two-button operation (power and mode) means setup and use are virtually instantaneous, even for first-time users.
The COOLSHOT 20 GIII measures actual distance only — no slope or incline/decline adjustment — making it fully approved for use in official golf competitions under the Rules of Golf. Whether you are playing a club medal, a county event, or simply prefer an unassisted distance figure for your own game, this rangefinder meets tournament requirements straight out of the box. Nikon is also proud to serve as the Official Rangefinder of The Open Championship, a partnership that underlines the brand's commitment to unmatched optical precision, measurement speed, and reliability for golfers who continually strive to improve their game.
The COOLSHOT 20 GIII runs on a single CR2 3 V lithium battery capable of delivering approximately 10,000 measurements at around 20 °C — enough for a full season of regular play on a single battery. An intelligent auto power-off function activates after approximately 8 seconds of inactivity to conserve battery life, so you never need to worry about remembering to switch the device off. Battery life will vary depending on temperature and usage patterns; the figure above should be used as a general guideline. The CR2 battery format is widely available at electronics retailers and golf shops worldwide.
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| Easy on the Eyes You do not need to remove your prescription glasses or sunglasses when aiming at the target. The COOLSHOT 20 GIII features a long eye relief, making it comfortable for every golfer to use. | Sharp and Brilliant Image The multilayer anti-reflective coated monocular with 6× magnification delivers a bright and brilliant image, while the adjustable dioptre correction guarantees perfect focus for every user. | Ready for Play Exceptionally easy to set up and use. Dimensions barely larger than a smartphone. This laser rangefinder sits securely in the hand during use and withstands light rain without missing a beat. |
We are proud to support The Open and be inspired by champions. Our golf rangefinders offer unrivalled optical precision, speed, and reliability for those who continuously strive to improve their game.
| Measurement Range (actual distance) | 5–730 m / 6–800 yd |
| Max. Flagstick Range (reference value)* | 270 m / 300 yd |
| Measurement Accuracy (actual distance) | ±1 m (up to 100 m) / ±2 m (100 m and above) |
| Distance Display Increment | 1 m / 1 yd |
| Magnification | 6× |
| Effective Objective Diameter | 20 mm |
| Real Field of View | 6.0° |
| Exit Pupil Diameter | 3.3 mm |
| Eye Relief | 16.7 mm |
| Dioptre Adjustment | ±4 m⁻¹ |
| Dimensions (L × H × W) | 91 × 73 × 37 mm |
| Weight (without battery) | 118 g |
| Operating Temperature | −10 to +50 °C |
| Operating Humidity (% relative humidity) | 80% or less (no condensation) |
| Power Supply | 1 × CR2 lithium battery (DC 3 V); auto power-off after approx. 8 s inactivity |
| Water Resistance | Rainproof — JIS/IEC Class 4 (IPX4) equivalent (under Nikon test conditions) |
| Battery Life | Approx. 10,000 measurements (at approx. 20 °C). This figure may vary depending on conditions such as temperature and other factors; use as a guideline only. |
| Laser Classification | IEC60825-1: Class 1M laser product; FDA/21 CFR Part 1040.10: Class I laser product |
| Electromagnetic Compatibility | FCC Part 15 Subpart B Class B; EU EMC Directive; AS/NZS; VCCI Class B; CU TR 020; ICES-003 |
| Laser Wavelength | 905 nm |
| Pulse Duration | 20 ns |
| Light Output | 15.2 μW (average) |
| Beam Divergence | Vertical: 2.5 mrad / Horizontal: 0.2 mrad |
| In the Box | COOLSHOT 20 GIII rangefinder, carrying case, CR2 lithium battery |
* Under Nikon's measurement conditions and reference values.
Single measurement: When measuring overlapping objects, the body vibrates briefly when the distance to the nearest object is displayed. Continuous measurement: The body vibrates briefly when the displayed reading shifts to a closer object. Depending on the shape, surface texture, and nature of the target object and/or weather conditions, the rangefinder may not vibrate every time it acquires a target.
| Feature / Model | COOLSHOT PROIII STABILIZED | COOLSHOT LITE STABILIZED | COOLSHOT 50i GII | COOLSHOT 20i GIII | COOLSHOT 20 GIII |
|---|---|---|---|---|---|
| Measurement Range — Actual Distance | 7.5–1,090 m | 7.5–1,090 m | 5–1,090 m | 5–730 m | 5–730 m |
| Max. Flagstick Range | 450 m | 450 m | 360 m | 270 m | 270 m |
| Image / Laser Stabilisation | Yes | Yes | No | No | No |
| LOCKED ON — Target Confirmation | Dual: display + vibration | Display | Dual: display + vibration | Vibration | Vibration |
| Display Type | OLED (red) | LCD (black) | OLED (red) | LCD (black) | LCD (black) |
| Slope / ID Technology | Yes | Yes | Yes | Yes | No |
| Magnetic Mount | No | No | Yes | No | No |
| Hyper Read Measurement Speed | approx. 0.3 s | approx. 0.3 s | approx. 0.3 s | approx. 0.3 s | approx. 0.3 s |
| Tournament Mode Indicator (non-slope) | Yes — LED | Yes — LED | Yes — LED | No | No |
| Weather Resistance | Waterproof | Waterproof | Rainproof | Rainproof | Rainproof |
| Measurement Modes | Golf mode (slope-adjusted + actual); Tournament mode (actual only); Horizontal & vertical | Golf mode (slope-adjusted + actual); Tournament mode (actual only) | Golf mode (slope-adjusted + actual); Tournament mode (actual only) | Golf mode (slope-adjusted + actual); Tournament mode (actual only) | Actual distance — tournament mode only |
| Dioptre Adjustment / Eyepiece Type | Yes / Adjustment dial | Yes / Structural plastic | Yes / Adjustment dial | Yes / Structural plastic | Yes / Structural plastic |
| Weight | 170 g | 170 g | 175 g | 146 g | 130 g |
| In the Box | Carrying case, CR2 battery | Carrying case, CR2 battery | Carrying case, CR2 battery | Carrying case, CR2 battery | Carrying case, CR2 battery |
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