Voice Caddie SC300i
Six key metrics, a 5.3-inch display, and 20 hours of battery life. The most straightforward and reliable launch monitor at this price — without simulator complexity.
£320
Check current UK retailer pricing. No simulator compatibility — see SC4 Pro if E6 integration is needed.
Key features
- 6 core metrics on built-in display: carry distance, swing speed, ball speed, smash factor, launch angle, apex
- Spin rate available via MySwingCaddie app (Bluetooth)
- Doppler radar K Band 24GHz with calibrated atmospheric pressure sensors
- 5.3-inch LCD display — larger than most competitors
- Voice output — announces carry distance after each shot
- Remote control included for club selection and settings
- 20-hour battery life — exceptional
- USB-C charging — 20 minutes provides 1 hour of use
- Works indoors and outdoors
- No phone required for basic use
- Standalone operation without app
- iOS and Android compatible
- Adjustable loft angles for club customisation
- 4.7 rating from 138 reviews
Our view
The Voice Caddie SC300i is one of the most positively reviewed launch monitors in the under-£400 category. A 4.7 rating from 138 reviews is a strong signal for a device that has been in golfers' hands long enough to generate meaningful feedback, and the consistent themes in those reviews are reliability, accuracy, and ease of use.
What the SC300i does is simple and it does it well. Six metrics on a 5.3-inch display — larger than most devices at this price — with voice output after each shot and a remote control for club selection. You set it up 5 feet behind the ball, turn it on, and start hitting. No app pairing required, no subscription, no complexity.
The 20-hour battery life stands out specifically. Most launch monitors in this category manage 5-10 hours. The SC300i's 20 hours means a full week of range sessions without charging, which matters for golfers who want a device that is always ready rather than one that needs managing.
The honest limitation is the absence of simulator compatibility. If you want to play virtual golf at home, the SC300i is not the right choice — the SC4 Pro adds E6 simulator integration at around £160 more. The SC300i is a practice tool rather than an entertainment system, and it is priced accordingly.
Spin rate is available via the MySwingCaddie app but not on the device screen itself. For golfers who want spin data regularly as part of their practice, connecting to the app for that metric adds a small friction that is worth knowing about. Atmospheric pressure sensors adjust carry distance calculations for conditions — a useful feature for outdoor use in varying weather.
Pros
- 4.7 rating from 138 reviews — one of the most positively reviewed devices in this price range
- 20-hour battery life — exceptional and class-leading at this price
- 5.3-inch display — larger than most competitors
- Voice output for seamless range sessions
- No subscription required
- No phone required for basic use — fully standalone
- Works indoors and outdoors
- USB-C charging — quick and convenient
- Atmospheric pressure sensors for accurate outdoor carry distances
- Remote control included
- iOS and Android compatible
Cons
- No simulator compatibility — cannot connect to E6 or other platforms
- Spin rate only available via app, not on built-in screen
- Only 6 metrics — no club path, face angle, or angle of attack
- US pricing only on Voice Caddie website — buy through UK retailers
- No dispersion or shot shape data without app
Who is this for?
| Handicap 0–12 | Low handicap | Good |
| Handicap 13–20 | Mid handicap | Ideal |
| Handicap 21–28 | High handicap | Ideal |
| Handicap 28+ | Beginner | Good |
The SC300i is the right choice for golfers who want accurate carry distances, ball speed, and smash factor for range sessions without any complexity or ongoing costs. It is particularly well suited to golfers who practice regularly and want a device that is always charged and ready. If you also want simulator golf at home, step up to the SC4 Pro for around £160 more. If you want the same simplicity at a lower price with fewer metrics, the SC200+ is worth considering.
Key specifications
| Technology | Doppler radar K Band 24GHz with atmospheric pressure sensor calibration |
| Display | 5.3-inch LCD built-in |
| On-screen metrics | Carry distance, swing speed, ball speed, smash factor, launch angle, apex (6 metrics) |
| App metrics | Spin rate |
| App | MySwingCaddie (iOS and Android, free) |
| Subscription | None |
| Indoor use | Yes (5ft behind ball) |
| Outdoor use | Yes |
| Simulator software | None |
| Battery life | Up to 20 hours |
| Charging | USB-C (20 min charge gives 1 hour use) |
| Weight | 15.4oz (approx 436g) |
| Dimensions | 6.5 x 4.7 x 1.1 inches |
| Accuracy | Ball speed ±2%. Carry distance ±3 yards (target mode). |
| Placement | 5ft behind ball, same level as ball |
| Measuring range | 10 to 370 yards |