What They Have in Common
Both run 6x magnification, both hit ±1 yard accuracy, both have slope with a legal-switch to turn it off, and both use an LCD display. The functional rangefinding experience — point, shoot, get a number you can trust — is the same. These are tools that do the same job. The differences are in form factor, battery approach, and price.
Where They Differ
Size and Weight
This is where the gap is biggest. The A1-Slope weighs 5.1 oz and measures 3.75 × 1.42 × 2.36 inches — Bushnell calls it their smallest rangefinder ever, and that's not marketing fluff you have to squint to believe. At 10 oz, the NX9 is nearly double the weight. That's not heavy by traditional rangefinder standards, but if you're specifically shopping for something that disappears into a shorts pocket or clips onto a bag strap without feeling like a rock, the A1-Slope is the one.
Most golfers won't notice the weight difference mid-round. But if you're a walking-only player who cares about every ounce, or you want something genuinely jacket-pocket slim, the A1-Slope earns that premium.
Battery
Here's the actual battleground. The A1-Slope is USB-C rechargeable and rated for 50+ rounds per charge. That's solid — USB-C is everywhere now, and 50 rounds is plenty for most golfers. But rechargeable rangefinders do eventually have batteries that degrade, and when they go, you're dealing with a repair or replacement situation.
Precision Pro's lifetime battery replacement program sidesteps that entirely. You contact them, they sort it out. It's a smart way for a challenger brand to compete: if the optics gap isn't dramatic (and here it isn't), a lifetime support promise changes the math. Call it a hunch, but this warranty structure probably matters more to golfers 3-4 years into ownership than it does at purchase.
Range and Water Resistance
The A1-Slope is rated to 1,300 yards with 350+ to a flag. The NX9 tops out at 900 yards. Realistically, you're never ranging a target at 900+ yards in a real round — but the extended range on the Bushnell does reflect better optical hardware, which can translate to faster target acquisition on overcast days or when the flag is tucked and hard to isolate.
The water resistance specs are also different. The A1-Slope carries an IPX6 rating (direct water jets from any direction). The NX9 is listed as "water-resistant" without a specific IP number published. Both will handle rain. The Bushnell's rating gives you more confidence in a genuine downpour.
Pulse Vibration
One feature the NX9 has that the A1-Slope doesn't: pulse vibration confirmation. When you lock onto the flag, you feel it in your hand. It's a small thing, but if you've ever squinted at your rangefinder display while the sun is hammering the LCD, having a physical confirmation you got the flag and not the tree behind it is genuinely useful. The A1-Slope doesn't list this feature.
Who Should Buy Which
Get the Precision Pro NX9 Slope if:
- You want a capable, accurate rangefinder at $199 and have no interest in paying the size-and-weight premium
- You're the golfer who always forgets to charge things and wants a battery solution that doesn't require you to think about it
- You find vibration confirmation useful — especially on bright days when reading the display is a squint-and-hope situation
- You're buying your first real rangefinder and want to spend sensibly without giving up accuracy or slope
Get the Bushnell A1-Slope if:
- You walk every round and have thought specifically about the weight of everything in your bag
- You want a rangefinder that fits in a shirt pocket without a bulge — the A1-Slope is small enough that this is actually true
- You play in conditions where IPX6 weather protection matters and you want the certification on paper
- You've already owned a few rangefinders and the form factor is genuinely the differentiator for you this time
The Bottom Line
The NX9 wins on value, and value is usually the right frame. It's accurate, it has slope, it has vibration confirmation, and the lifetime battery program is a real differentiator that compounds over time. The A1-Slope is a better piece of hardware in some specific ways — smaller, lighter, longer range, clearer weather rating — but those advantages cost $100 more and only matter to a narrower slice of buyers. Most golfers who pick up either one will play better golf than when they were guessing yardages anyway.
Get the Precision Pro NX9 Slope.