What They Have in Common
Both rangefinders hit ±1 yard accuracy, run 6x magnification, and carry slope with a legal-play switch. Both use LCD displays and have magnetic mounting. These are the features that actually matter for a round of golf, and neither one skimps on them. At their cores, they do the same job.
Where They Differ
Size and Weight
This is the most obvious split. The A1-Slope weighs 5.1 oz and measures 3.75 × 1.42 × 2.36 inches. Bushnell calls it their smallest rangefinder ever, and looking at those dimensions, that checks out. The NX9 Slope comes in at 10 oz with no published dimensions — nearly double the weight. That's not nothing when you're carrying a bag for four hours. The A1-Slope fits in a shirt pocket without dragging it down. The NX9 Slope probably lives in your bag pocket or on a cart clip. Neither is a dealbreaker depending on how you play, but if you walk and carry, you'll notice the difference by the back nine.
Battery Setup
The A1-Slope is USB-C rechargeable, rated for 50+ rounds (around 3,000 actuations). The NX9 Slope runs on a standard battery with Precision Pro's lifetime replacement program — you mail it in, they swap the battery for free, forever.
Honestly, the Bushnell's setup is more convenient in practice. USB-C means you can top it off with the same cable as your phone. Fifty rounds is a long stretch between charges for most people. The Precision Pro's lifetime program is a nice hedge against battery anxiety, but the day you actually need to mail something in mid-season is the day you'll wish you had a rechargeable. Call it a hunch, but most people who buy the NX9 for the lifetime program will use that benefit once, if ever.
Range
The A1-Slope is rated to 1,300 yards, with 350+ yards to the flag. The NX9 Slope tops out at 900 yards. For golf purposes, the difference is mostly theoretical — you're rarely ranging anything past 500 yards on a course — but the A1-Slope's ceiling is meaningfully higher if you ever want to use it off the course for hunting or other distance work.
Vibration Feedback and Water Resistance
The NX9 Slope includes pulse vibration to confirm you've locked onto the flag. It's a small thing, but once you've used vibration confirmation you tend to miss it when it's gone — you just know the shot registered without staring at the display. The A1-Slope doesn't list this feature.
On water resistance, the A1-Slope carries an IPX6 rating, which means it can handle direct water jets — legitimate rain-round protection. The NX9 Slope is listed as "water-resistant" without a published rating. Probably fine for light rain, but the A1-Slope has a documented standard behind the claim.
Who Should Buy Which
Get the Bushnell A1-Slope if:
- You walk and carry, and five extra ounces in your shirt pocket actually matters to you by the 15th hole
- You want a documented weather rating — IPX6 is a real spec, not a marketing adjective
- You're already charging your phone and watch every night and just want the rangefinder to fold into that routine
- You want the longer range ceiling, whether for off-course use or just future-proofing
Get the Precision Pro NX9 Slope if:
- You're a ride-and-cart player who leaves the rangefinder in the cart holder all round — weight is irrelevant, and the $100 savings is real
- You like vibration lock confirmation and don't want to second-guess whether you tagged the flag or the trees behind it
- You'd rather not think about charging schedules and want a battery program that has you covered long-term
- You're newer to rangefinders and don't want to spend $300 until you're sure you'll use it every round
The Bottom Line
The $100 gap between these two is real, and Precision Pro closes it better than most budget alternatives do. The NX9 Slope is a legitimate rangefinder. But the A1-Slope is doing something specific — it's genuinely small, genuinely light, and has a proper water resistance rating behind it. For anyone who walks, the weight difference alone starts to justify the premium. The vibration feedback on the NX9 is the one feature I'd actually miss going the other direction.
If the $100 is a stretch, the NX9 does the job. If you can swing it, the A1-Slope is the better piece of equipment.
Get the Bushnell A1-Slope.
See Also