Specification
- Product Model: GVM CM2
- Product Name: Built-in microphone
- Operating Frequency Band: 2.4–2.4835 GHz
- Power Supply: Built-in rechargeable 3.7 V 60 mAh polymer lithium battery
- Pickup / Reception Sensitivity: –38 dB ±2 dB
- Maximum Sound Pressure Level (SPL): 125 dB SPL
- Frequency Response: 20 Hz–20 kHz
- Input Signal-to-Noise Ratio: ≥73 dB (1 kHz / 1 Pa)
- Transmission Power: 13 dBm
- Receiving Sensitivity: –96 dBm @ GFSK
- Modulation Method: GFSK
- Transmission Bandwidth & Sampling Rate: 24-bit / 96 kHz
- Audio Output: Independent TX1 and TX2 audio tracks; mono and stereo modes supported
- Audio Output Power: 12 dBFS in non-noise cancellation mode; 9 dBFS in noise cancellation mode
- Latency: ≤25 ms
- Transmission Distance: ≥200 m (line of sight)
- Automatic Shutdown: The device automatically powers off when the battery voltage drops below 3.3 V or when no connection is detected for 1 minute
- Charging Limit Voltage: 5.2 V
- Charging Time: 1.5 hours (charging case), TX 1 hour
- Battery Life: TX ≥8 h; up to 24 hours with charging case
- Standby Power Consumption: ≤5 µA