SC4 PRO specs
| Brand | Voice Caddie |
|---|---|
| Type | Radar |
| Placement | Behind the ball: 5 ft behind the ball, level with the hitting surface (4 ft if space is tight); 10 ft from ball to net recommended, 9 ft minimum |
| Room depth | 13 ft minimum, 15 ft comfortable. Voice Caddie: 5 ft behind the ball (can move to 4 ft) and 10 ft from ball to net/screen (9 ft minimum), so 13–15 ft. |
| Use | Indoor & outdoor |
| Spin | Reported by the radar; Voice Caddie doesn't say whether it's measured or calculated |
| Club data | Club speed only: Club speed and smash factor only: no path, face or attack angle |
| Putting | No |
| Balls / stickers | None: standard golf balls (no foam or practice balls) |
| Display | Built-in screen with voice output and a remote |
| Battery | Up to 10 hours (maker rating) |
| Weight | 1.3 lb |
| Free to use | 8 metrics on the unit, the free VOICECADDIE S app, a 3D driving range and 5 E6 Connect courses |
| Course play | 5 E6 Connect courses included. More courses: E6 subscription, or Swing Caddie Home Golf at $69.99/yr (Windows, 24 courses) |
| Third-party software | E6 Connect. E6 Connect only (5 courses free). GSPro doesn't support it. |
| Works on | Standalone screen; iPhone/Android app; E6 Connect on iOS and PC |
| Warranty | 1 year limited |
| 3-year cost | About $500: hardware plus three years of the cheapest course plan |
| Price tier | $ Budget (under $1,000). See Amazon for today's price. |
- Same hardware as the original SC4; the PRO is a firmware ('ProMetricS') and app upgrade, per Breaking Eighty and Plugged In Golf.
- Manual accuracy claims: ball speed ±1 mph, club speed ±3 mph, launch angle and direction ±1° (maker claims). Effective carry range 15–370 yd.
- The app adds side spin, spin axis and back spin to the 8 on-screen metrics. Spin isn't shown for GW, SW or LW.
- Sold on Amazon as 'Voice Caddie SC4 PRO' by the Voice Caddie Official Store; Voice Caddie's own store calls it the Swing Caddie SC4 PRO.
Specs come from the maker's manuals, FAQs and spec pages and from independent reviews; they can change with firmware and new bundles. Confirm what's in the box on the Amazon page before buying.
Voice Caddie SC4 PRO (Swing Caddie) video review
Video by Breaking Eighty | Honest Golf Reviews on YouTube. Independent creator content, shown as a reference. It is not part of our scoring.
The Voice Caddie SC4 PRO (sold by Voice Caddie as the Swing Caddie SC4 PRO) is a small radar launch monitor with its own screen, a voice readout and a remote. It costs about $499.99 on Amazon (Nov 12, 2026; prices change), sold by the Voice Caddie Official Store. What sets it apart from the other budget units is that you never have to pay a subscription to use it.
Who it’s for, and who should skip it
The SC4 PRO is a practice tool first. It suits golfers who want carry, ball speed and spin at the range or in the garage without opening a phone app, and who like the idea of a few free simulator courses on the side. At 1.3 lb, with Voice Caddie’s rated battery of up to 10 hours, it’s easy to carry.
Skip it if a full home simulator is your main goal. It doesn’t work with GSPro or Awesome Golf, it doesn’t read putts, and its club data stops at club speed and smash factor. The Garmin Approach R10 costs about the same and adds face angle, path and GSPro support. The Rapsodo MLM2PRO adds measured spin with RPT balls for about $50 more, though it needs a membership.
Key capabilities
The unit displays 8 metrics on its built-in screen and reads them aloud. The free VOICECADDIE S app adds side spin, spin axis and back spin. Spin isn’t shown at all for gap, sand or lob wedges, and Voice Caddie doesn’t say whether spin is measured or calculated.
The SC4 PRO uses the same hardware as the original SC4. Breaking Eighty and Plugged In Golf both describe the PRO as a firmware (“ProMetricS”) and app upgrade. Voice Caddie’s manual claims ball speed within ±1 mph, club speed within ±3 mph and launch angle and direction within ±1°, with an effective carry range of 15–370 yards. Those are maker claims.
Room and setup
This is the most compact radar setup we track. Voice Caddie puts the unit 5 ft behind the ball, level with the hitting surface, and lets you move it to 4 ft if space is tight. It recommends 10 ft from ball to net, with 9 ft as the minimum. That’s 13–15 ft in total, a couple of feet less than the R10 or the Rapsodo units.
The trade-off is setup care. Reviewers note it needs careful aiming and leveling, so expect to spend a few sessions dialing it in. Use the room size checker to see whether your space works, and our small-room launch monitor guide covers the alternatives that sit beside the ball.
Software and subscription costs
Here the SC4 PRO wins outright. Your $500 includes the on-screen data, the free app, a 3D driving range and 5 E6 Connect courses, with no plan required. If you want more courses, you can pay for an E6 subscription or Swing Caddie Home Golf at $69.99 a year (Windows, 24 courses). That’s optional, so the three-year cost can stay at the hardware price.
The limit is compatibility. E6 Connect is the only third-party simulator it supports. GSPro doesn’t list it. See our golf simulator software comparison if you’re unsure which platform you’ll want later.
Accuracy
The independent results are better than the price suggests, with one caveat. Plugged In Golf called it the best value in its range and found it in line with a GCQuad indoors on “virtually every shot”, with spin the only metric ever significantly off. Breaking Eighty rated it the best personal launch monitor under $500, but saw spin occasionally miss by 2,000–3,000 rpm. Ball speed and carry are its strengths; treat individual spin numbers with some skepticism.
What you’ll need beyond the box
- Net. This unit pairs naturally with a practice net rather than a projector. The GoSports 10 × 7 ft net is about $89.99; the Spornia SPG-7 with ball return is about $349.99.
- Mat. The GoSports Elite 5 × 5 ft mat is about $213.62. The SC4 PRO must be level with the hitting surface.
- Balls. Standard golf balls only, no foam or practice balls. No stickers needed.
- Screen and projector. Optional. If you want to project the E6 courses, an enclosure like the ZivPlay (about $379.99) plus a short-throw projector is the usual route.
- Device. A phone for the app; E6 Connect runs on iOS and PC.
A net-and-mat practice setup comes to roughly $800 all in, with nothing to renew. Price it in the setup cost builder.
Bottom line
The SC4 PRO is the subscription-free budget pick: about $500 gets a self-contained radar with a screen, a 3D range and five E6 courses. It’s a strong range companion and a decent net trainer. It’s a weaker simulator base, because club data stops at club speed, spin can wander and GSPro isn’t an option. If the simulator is the point, compare it with the R10 and MLM2PRO in our best budget golf simulator guide, or step up to the subscription-free FlightScope Mevo Gen2. Check today’s price on Amazon.
Build a simulator around the SC4 PRO
A launch monitor is one part of a home simulator. These are the parts we'd pair with it, all sold on Amazon. Check sizes against your room before you buy.
- EnclosureGoSports Golf Simulator Enclosure, frame + HD impact screen, 10 × 8 ftUniversal fit
A complete frame, impact screen and netting from a big-name net maker, sold and shipped by Amazon with 186 ratings. Also offered in 12 × 9 and 14 × 8 ft. Price shown is the 10 × 8 ft option; larger sizes cost more.
- Impact screenDurbles triple-layer golf simulator impact screen, 8.2 × 8.2 ftUniversal fit
A triple-layer replacement or DIY screen with grommets and bungee cords; the sound-damping middle layer is the point. Several sizes on one listing; measure your frame first.
- NetThe Net Return Home/Pro Series golf net, 8 × 7.5 ft, auto ball returnUniversal fit
The premium practice net: aluminum frame, S-shaped return that sends the ball back, and 4.8 stars from 348 ratings. A net, not a projector screen. The maker quotes 8.5 ft of hitting distance and a 9 ft ceiling.
- Hitting matSIGPRO Softy golf mat, 4 × 7 ft, 2.5 in foam coreUniversal fit
A joint-friendly premium mat with a replaceable hitting strip and real-tee support; the 4 × 7 ft size gives a full stance. 2.5 in thick: raise side-of-ball units (SkyTrak, Bushnell, Uneekor, Garmin R50) to mat height.
- Hitting matSIGPRO Softy golf mat, 4 × 10 ft (dual stance)Universal fit
The 10 ft version has stance zones on both sides, for households with left- and right-handed golfers. Side-of-ball monitors still need moving to the other side for lefties.
- ProjectorOptoma GT1080HDR short-throw 1080p projector, 3,800 lumensUniversal fit
The long-running budget sim projector: 695 ratings, low input lag and a 100-inch image from just over 3 ft.
- ProjectorBenQ TH671ST short-throw 1080p projector, 3,000 lumensUniversal fit
A zoom-lens short thrower (0.69–0.83) that gives more freedom in where you mount it; 4.7 stars from 682 ratings.
- MountMount-It! projector ceiling and wall mount, 40 lb capacityUniversal fit
An adjustable-arm universal mount for putting a short thrower on the ceiling, clear of your swing and the ball's path.
Checked November 2026. Price the whole build in the setup cost builder or browse every part in build your sim.
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