The difference that matters
The Ernest Sports ESB1 measures spin directly, while the Voice Caddie Swing Caddie SC300i does not report it. Only the Voice Caddie Swing Caddie SC300i is listed for outdoor use as well as indoors. At the prices we observed, the Ernest Sports ESB1 costs $55 less.
Side by side
| Specification | Voice Caddie Swing Caddie SC300i | Ernest Sports ESB1 |
|---|---|---|
| Tracking | Radar | Radar |
| Detail | Doppler radar with atmospheric-pressure calibration | 3D Doppler radar |
| Placement | Behind the ball | Behind the ball |
| Room depth (FOREference) | 15–17 ft | 15–17 ft |
| Stated ceiling | — | — |
| Spin | Not reported | Measured |
| Ball data listed | 5 | 5 |
| Club data listed | 2 | 2 |
| Indoor / outdoor | Both | Outdoor |
| Ball marking | Not required | Not required |
| Display | 5.3-inch LCD on the unit | iOS or Android |
| Subscription | Not stated | Not stated |
| Weight | 0.94 lb | 1.5 lb |
| Price seen | $330 | $275 |
Highlighted rows differ. Figures come from each product's sources; room depth, distances and brightness are FOREference calculations using the same method for both.
Which should you choose?
Voice Caddie Swing Caddie SC300i
Choose the Voice Caddie Swing Caddie SC300i if you also want to use it at the range.
Ernest Sports ESB1
Choose the Ernest Sports ESB1 if measured spin matters to you or price leads the decision ($55 less).
Before you buy either
- Check the room: room size calculator and ceiling height calculator.
- Confirm what each seller includes — accessories, software trials and bundles change often.
- Read the limitations on each full reference page.
FOREference compares published specifications; we have not tested these products side by side. How we work · Disclosure