What They Have in Common
Both are 6x magnification, ±1 yard accurate, slope-enabled rangefinders in the same price tier. They have built-in magnets for cart attachment and both offer slope toggle for tournament compliance. The accuracy spec is identical, and neither is going to leave you guessing on a 150-yard approach. This is the baseline — the differences are where you actually earn your money.
Where They Differ
Size, Weight, and Feel
The A1-Slope is genuinely tiny. At 5.1 oz and 3.75 inches long, Bushnell calls it their smallest rangefinder ever, and for once that kind of spec actually translates to something you notice. It fits in a shorts pocket without the rectangular lump. The TL1 is 7.1 oz and noticeably taller — more in line with a traditional rangefinder profile. Neither is heavy, but two ounces and a size difference is real when you're fishing for it one-handed on the cart. If you walk and carry, the A1-Slope's form factor matters more than it sounds.
Display
This is where the TL1 pulls ahead. A dual-color OLED with three brightness levels is a meaningfully better display than the A1-Slope's LCD — especially reading numbers in the shade of your palm or on a bright overcast morning. OLEDs don't need a backlight; contrast just works. The A1-Slope's LCD is fine, but "fine" and "better" aren't the same thing, and at this price you should know what you're trading off.
Battery Approach
Here's where it gets genuinely interesting. The A1-Slope is USB-C rechargeable with a spec of 50+ rounds per charge (~3,000 actuations). That's a lot of golf on one charge, and if you remember to plug it in with the rest of your devices, you'll probably never think about the battery again. The TL1 runs on a CR2 lithium rated for ~5,000 uses — and CR2s are at every pharmacy in the country, which matters when you're on hole 12 and the battery dies mid-round. Rechargeable is more convenient day-to-day. Replaceable is more forgiving when you forget. Pick your failure mode.
Range Ceiling and Speed
The A1-Slope reaches 1,300 yards; the TL1 tops out at 1,000. For rangefinding to a flag, neither limit will ever matter — you're not locking a pin at 1,000 yards. But the TL1 does advertise a 0.1-second response time and a "Pin Tracer" mode for isolating the flag against a background. The A1-Slope lists 350+ yards to flag and ±1 yard accuracy but doesn't make specific speed claims. Seems like the TL1 was engineered with flag acquisition speed as a priority — but I don't work at Voice Caddie, and the real-world gap probably isn't the thing you notice on a Sunday round.
Who Should Buy Which
Get the Bushnell A1-Slope if:
- You walk and carry your bag and want something that doesn't add a noticeable lump to your pocket
- You're already USB-C everything — phone, earbuds, watch — and want one less thing to think about
- You play enough rounds that 50 per charge basically means you're never worried about battery
- You're the golfer who's been waiting for a Bushnell that's actually smaller and lighter than the previous generation
Get the Voice Caddie TL1 if:
- You tee off early on bright fall mornings and have stared down a washed-out LCD trying to read 163 vs 168
- You travel for golf — destination rounds, buddy trips — and you don't want to pack a charging cable just for your rangefinder
- You want flag acquisition to be fast and confident, and you appreciate a device built around that single job
- You're the golfer who's had a rechargeable device die at the worst possible time and decided "never again"
The Bottom Line
These are legitimately close, and I won't pretend there's a runaway winner. The TL1's OLED display is better than the A1-Slope's LCD — that's a real advantage. But the A1-Slope is $49 cheaper, meaningfully smaller, and charges off your existing cable. For most golfers, the portability and USB-C convenience outweigh the display upgrade, especially when the accuracy is identical.
If the display is the thing you care most about, spend the extra $49 and get the TL1. But for the majority of golfers buying in this tier, the A1-Slope does the job and fits in your pocket without a fight.
Get the Bushnell A1-Slope.
See Also