What They Have in Common
Both give you 6x magnification, ±1-yard-class accuracy, slope mode with a toggle for tournament compliance, and a cart magnet. Both are water-resistant enough for real weather — the Z30 is rated IPX7 (submersible), the A1-Slope is IPX6 (heavy rain). Either one will handle a round in the drizzle without a second thought.
Where They Differ
Size, Weight, and Portability
This is the biggest split. The A1-Slope is genuinely small — 5.1 oz and barely bigger than a deck of cards. The Z30 is 7.4 oz with a noticeably bulkier footprint. That 2.3-oz difference sounds trivial until you're carrying it in a shorts pocket for four hours. The A1-Slope disappears; the Z30 does not. If you walk and carry, the A1-Slope's size isn't a minor perk — it's the point of the device.
Display and Optics
Here's where the Z30 does something genuinely different. It uses a transparent OLED in red, which overlays the yardage readout onto what you're looking through, rather than showing a separate screen in a corner of the viewfinder. If you've ever used a traditional LCD rangefinder in the middle of the day and squinted to read the number, you know the problem — the Z30's approach is designed to solve it. The A1-Slope uses a standard LCD. Neither display type is objectively better for everyone, but the OLED overlay is a real differentiator if readability in variable light is a priority.
Battery
The A1-Slope is USB-C rechargeable and rated for 50+ rounds (~3,000 actuations), which is genuinely impressive. But rechargeable means you need to remember to charge it, and mid-season "I forgot" is a real thing. The Z30 runs on a CR2 for up to a year — meaning you swap it out once and forget about it. CR2 batteries are available at pretty much any pharmacy or hardware store, so you're never stuck hunting for a charger or a cable. For tournament players who want zero friction, that's a meaningful advantage.
Range and Accuracy
The A1-Slope measures out to 1,300 yards and locks flags at 350+ with ±1 yard accuracy. The Z30 tops out at 400 yards to the flag, and its stated accuracy is ±1 meter — that's technically about a yard, but the spec framing is slightly different. For everyday golf, 400 yards to the flag is plenty. You're not ranging a par-5 green from the tee box in your regular round. That said, the A1-Slope's longer ceiling gives it a bit more versatility if you use your rangefinder for anything beyond flag-hunting.
Price
The Z30 is $70.99 cheaper at $229 vs. $299.99. That's one decent round of golf, or a sleeve and a half of Pro V1s. Not wallet-busting either way, but it's real money.
Who Should Buy Which
Get the Bushnell A1-Slope if:
- You walk and carry your bag and you're tired of adding bulk to your pockets.
- You're the type who plugs everything in overnight anyway — your watch, your phone, your headphones — and one more USB-C cable is no big deal.
- You want the longer effective range and the tighter published accuracy spec.
- You play a lot of rounds and want the confidence of a rechargeable battery rated for 50+ rounds before you even think about it.
Get the Garmin Approach Z30 if:
- You play twice a month at most and want a rangefinder you can drop in your bag and forget about until you need it — battery and all.
- The OLED overlay display actually appeals to you; it's genuinely different and worth looking at before you decide.
- You're a Garmin ecosystem user and find the Find My Garmin and Range Relay features useful alongside your other Garmin gear.
- You want to spend $70 less and don't need the extra range ceiling.
The Bottom Line
These are meaningfully different tools. The A1-Slope costs more and justifies it with a smaller build, longer range, and USB-C charging that works for most golfers' routines. The Z30 undercuts it by $70 with a distinctive display and a battery you'll change once a year. Seems like Garmin is positioning this more as an accessible entry point than a direct premium competitor, which is fine — it does the core job well.
But if I had to pick one, the A1-Slope's combination of genuine compactness and USB-C convenience is a better fit for the most golfers who are actually in this price range.
Get the Bushnell A1-Slope.
See Also