Specifications of ECN27
| Weight | about 100 g |
| Color | black |
| PTT Key | none |
| VOX | none |
| Emergency Key | none |
| Microphone Sensitivity | –36±5 dB @ 1 kHz 2.0 V 2.2 K, 0 dB = 1 V/Pa |
| Speaker Power | 30 mW (rated); 50 mW (max.) |
| Speaker Impedance | 2x32 Ω±15% @ 1 kHz |
| Speaker Frequency Response | 105±5 dB @ 1 kHz at 0.179 V |
| IP Rating | none |
| Operating Temperature | –20℃ to 60℃ |
| Storage Temperature | –40℃ to 85℃ |