Nikon Coolshot 20i GIII

Optics & Viewing: Features a 6x magnification system paired with a 20 mm objective lens, offering a clear 6° field of view. An eye relief of 16.7 mm and a 3.3 mm exit pupil ensure comfortable viewing, even for golfers wearing eyeglasses, while the ±4 m−1 diopter adjustment allows for quick focus customization.

Measurement Performance: Measures distances ranging from 5 to 730 meters (6 to 800 yards) with single-meter/yard increments. It features an accuracy rating of $\pm 1\text{ m/yd.}$ for targets under 100 meters/yards and $\pm 2\text{ m/yd.}$ beyond that distance, with a dedicated flagstick targeting range up to 270 meters (300 yards).

Laser & Safety Specifications: Uses an eye-safe laser system (Class 1M under IEC60825-1 and Class I under FDA 21 CFR Part 1040.10) with a peak output of 15.2 W, a 20 ns pulse duration, and a beam divergence of 2.5 mrad vertically by 0.2 mrad horizontally.

Build & Dimensions: Extremely portable at 91 x 73 x 37 mm (3.6 x 2.9 x 1.5 inches) and engineered with weather-resistant protection (JIS/IEC protection class 4 equivalent, code 905).

Power & Environment: Powered by a single 3V CR2 lithium battery capable of roughly 10,000 actuations at room temperature (20°C / 68°F), featuring an automatic power shut-off after 8 seconds of inactivity. It operates reliably in temperatures from -10°C to +50°C (14°F to 122°F) and relative humidity up to 80%.

Regulatory Compliance: Fully compliant with international electromagnetic compatibility standards, including FCC Part 15 Subpart B (Class B), EU EMC Directive, AS/NZS, VCCI Class B, ICES-003, and UK Electromagnetic Compatibility Regulations.