| Model | SF-3520 |
| Imaging sensor | 1/3.7 CMOS |
| Transmitting chip | MR6760A |
| Working frequency | 2400~2483.5MHZ |
| Antenna impedance | 50Ω |
| Transmitting power | 20dBm |
| Transmission distance | Single view 250M / Quad view 150M |
| Transmission rate | 4Mbps |
| Modulation | FSK / GFSK |
| Delay time | 180ms Max |
| Horizontal angle | 50° |
| Resolution | 720P |
| Video rate | 25f/s 30f/s |
| Video compression | MPEG4 |
| Video system | PAL/NTSC |
| Night vision | ≥5m |
| Feature | Shockproof, night vision with 1 LED light |
| Charging interface | Type-C |
| Charging current | 5V/2A |
| Battery capacity | 3.7V/9600mAh |
| Charging time | 4.5H |
| Discharge time | 11H |
| Operating temperature | -20~+60°C, RH 85%MAX |
| Storage temperature | -20~+65°C, RH 85%MAX |
