Zach Johnson's caddie, Brian Smith, uses a rangefinder during the first round of the 2021 PGA Championship at Kiawah Island Resort's Ocean Course
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The rangefinder displays the lasered distance to the pin, of course, but also gives you the GPS distances to the front, center and back of the green. It features Dual Power Technology, which allows you to use the laser even if the GPS is not charged. It also uses PinSeeker JOLT Technology, which lets you know that you locked onto the flagstick through short, vibrating bursts.