| Model ID | 312 III STR "Long Nose" |
| Form Factor | ½" Standard Mount |
| Signal Path | Analog Hardware |
| Dimensions | 1.8 × 1.6 × 2.9 cm (W × H × D) |
| Weight | 5.45g |
| Frequency Response | 20Hz-35kHz (20Hz-20kHz ±1.0dB) |
| Output Voltage (1kHz, 5cm/sec) | 3.5mV |
| Channel Separation (1kHz) | 30dB |
| Channel Separation (10kHz) | 27dB |
| Channel Balance (1kHz) | 1.0dB |
| IMD (+6dB) | 1.3% |
| Trackability (10kHz) | 32cm/sec |
| Compliance (100Hz) | 32x10⁻⁶cm/dyne |
| Tracking Force Range | 1.2-2.5g |
| Pressure Tracking | 0.5-1.2g |
| Stylus Type | STR (0.3x1.6x0.6mil) |
| Effective Tip Mass | 0.6mg |
| Stylus Color | Red |
| MSRP (1980) | $110.00 |
