Specifications of SM27W2
| Dimensions | 86.2* 62.6* 40.6mm |
| Weight | about 125 g |
| Color | black |
| PTT Key | available |
| Emergency Key | available |
| Microphone Sensitivity | –42±3 dB @ 1 kHz 3.0 V 2.2 K, 0 dB = 1 V/Pa |
| Speaker Power | 2 W (rated),2.5 W (max.) |
| Speaker Impedance | 4 Ω±15% @ 1 kHz |
| Speaker Frequency Response | 83±4 dB @ 1 kHz 1 W/100 cm |
| Communication Protocol | Bluetooth V4.2 |
| BT Range | ≥10 m |
| Certification | FCC, and IC |
| Battery Life | ≥ 20 h (5/5/90) |
| Charging Time | ≤ 3.5 h |
| IP Rating | IP67 |
| Operating Temperature | –20℃ to 60℃ |
| Storage Temperature | –20℃ to 60℃ |