| Feature Comparison Chart | EZ | PR | SP | 
|---|---|---|---|
| Peak Measurement Mode | - | ||
| Memory (2000+ Measurements) | - | ||
| USB Output, Software & Cable | - | ||
| SPC & PLC Output | - | - | |
| 99 Programmable Presets | - | - | |
| Multiple languages | - | - | |
| Calibration Reminder; by date or # of measurements | - | - | 
Open end spanner heads are available as options in sizes 1/4 inch to 1 inch / 7-41mm

*The ETW-PR-1000 and ETW-PR-2000 have fixed heads and are not compatible with the open end spanners.
| Model | Range | Std Drive | Optional Drive | ||
| ETW-PR-10 | 1 - 10 N-m | 1/4" | 3/8" | ||
| ETW-PR-20 | 2 - 20 N-m | 1/4" | 3/8" | ||
| ETW-PR-50 | 5 - 50 N-m | 3/8" | 1/4" | ||
| ETW-PR-100 | 10 - 100 N-m | 3/8" | 1/4" | ||
| ETW-PR-200 | 20 - 200 N-m | 1/2" | - | ||
| ETW-PR-340 | 34 - 340 N-m | 1/2" | - | ||
| ETW-PR-600 | 60 - 600 N-m | 3/4" | - | ||
| ETW-PR-800 | 80 - 800 N-m | 3/4" | - | ||
| ETW-PR-1000 | 100 - 1000N-m | 3/4" | - | ||
| ETW-PR-1500 | 150 - 1500 N-m | 1" | - | ||
| ETW-PR-2000 | 200 - 2000 N-m | 1" | - | ||
| Accuracy | CW - ±1% CCW - ±1% 10 - 100% of capacity (readings start at 2%) | 
| Resolution | 0.01 N-m / 0.1 in-lb / 0.01 ft-lb | 
| Sampling Frequency | 500 Hz (500 samples/sec) | 
| Display Update Rate | 4 Hz (4 times/sec) | 
| Operation Mode | Peak, Track, Preset | 
| Unit selection | Lb-in, Lb-ft, N-m, N-cm, Kgf-m, Kgf-cm, Oz-in | 
| Length | 410 mm / 0,85 kg (Ranges 10 - 135) 625mm / 1,3 kg (Ranges 150 - 400) 1,2 m / 4 kg (Ranges 500 - 1000) 1,6 m / 6kg (Ranges 1500 - 2000) | 
| Head Type | Robust Bi-Directional Interchangeable Ratchet | 
| Battery | 4 x AA | 
| Battery Life | 180+ hours | 
| Operating Temperature | -10°C ~ 60°C | 
| Storage Temperature | -20°C ~ 70°C | 
| Humidity | Up to 90% non-condensing | 
| Storage Capacity | 2000+ values | 
| Communication Port | USB bi-directional communication port | 
| Warranty | 1 year |