The Quick Verdict
Get the Garmin Approach Z10. It costs $50 more than the Voice Caddie L6, but that gap buys you a year of battery life on a single CR2, Bluetooth connectivity that plugs into Garmin's GPS ecosystem, and a cart magnet so it's never rattling around your bag pocket. The L6 has an OLED display and is a touch lighter, but the Z10 wins on ecosystem and convenience. Go with the L6 only if you specifically want an OLED screen and have no use for the Garmin app integration. Check price at PlayBetter →
What They Have in Common
Both rangefinders hit ±1 yard accuracy at 6x magnification and adjust for slope in a way you can turn off for tournaments — a slope switch on the L6, tournament mode on the Z10, which switches PlaysLike Distance off and shows an external light. Both confirm a lock with vibration feedback — useful when you're not sure if you caught the pin or the tree behind it. That's a solid baseline. Anything else separating them comes down to the execution details.
Where They Differ
Display Technology
The L6 uses an OLED display; the Z10 uses a transparent PDLC display with black readouts. I haven't had the two side by side, but I'd guess the OLED is the easier read in low light — early morning rounds, overcast days, that shadowed stretch of fairway that never gets direct sun. If you've ever squinted at a rangefinder display in mixed light and wished for more contrast, that's the L6's case.
Battery and Build
Neither of these is rechargeable — the L6 runs on disposable batteries too — but Voice Caddie doesn't publish a battery type or life for it, so there's no way to know how long one lasts. The Z10 runs on a single CR2 battery that Garmin says lasts up to a year. CR2 batteries are at every pharmacy in the country — you can swap one mid-round if you have to. That kind of low-maintenance reliability matters more than it sounds, especially if you play a lot and don't want rangefinder battery life as a variable. The Z10 also carries an IPX4 water resistance rating; Voice Caddie lists the L6 as "water-resistant" without a formal rating, which is technically less specific.
Range and Scanning
The L6's listed range is 1,000 yards and it includes a rapid-fire scan mode alongside its Pin Tracer tech. The Z10 tops out at 350 yards to a flagstick and 1,200 yards to reflective targets. In practice, 350 yards to a flag covers every par-5 second shot you'll ever hit from the fairway, so it's not a real-world limitation. The L6's rapid-fire scanning is genuinely useful if you like to sweep across multiple targets quickly — that's a nice feature. Call it a wash for most golfers; it matters more if you're the type who wants yardage to the front bunker, back of the green, and flag all in one sweep.
Ecosystem and Extras
The Z10 has Bluetooth and plugs into Garmin's app. You also get Range Relay (which can push distance data to a compatible Garmin device), Find My Garmin, and a built-in cart magnet. The cart magnet alone is worth mentioning — it sounds minor until you've been fishing a rangefinder out of a cart bag pocket 18 times in a row. The L6 has no built-in cart magnet, and Voice Caddie lists no Bluetooth or app connection for it.
Who Should Buy Which
Get the Garmin Approach Z10 if:
- You already have a Garmin GPS watch or device and want ranged distances sent to it through Range Relay
- You want a known battery life — Garmin rates the Z10 at up to a year on one CR2, while Voice Caddie doesn't publish a figure for the L6
- You ride carts and want your rangefinder stuck to the frame instead of bouncing around a bag
- You're the 15-handicap who plays 40 rounds a season and wants something that's just there every time, no drama
Get the Voice Caddie L6 if:
- You want an OLED display — my guess is it's the easier of the two to read in low light
- You do a lot of rapid scanning to check multiple targets on a single approach and want a rangefinder built for that workflow
- You're walking and carrying your bag, so a cart magnet is irrelevant and the L6's lighter 5.6 oz vs 6.3 oz is a minor edge
- You'd rather save $50 and don't have an existing Garmin ecosystem to connect to
The Bottom Line
Fifty dollars separates these two, and for that gap the Z10 gives you a cart magnet, Bluetooth integration, a year-long CR2 battery, and a formal water resistance rating. The L6 counters with an OLED display and a rapid-fire scan mode — real advantages if those things match how you use a rangefinder. But the Z10 is the more complete package for most golfers: connected, magnet-mounted, and rated for up to a year on a battery.