Say goodbye to unwanted tracking.
The CM4 portable jammer is a compact, box-style signal blocker built to defeat modern GPS locators and GSM-based tracking devices. Whether it’s a hidden GPS tracker in your car, a personal locator, or a GSM spy device, the CM4 gives you back control over your privacy.
Unlike clunky, outdated jammers, this sleek aqua-colored box design uses a built-in antenna and a rechargeable lithium battery that runs up to 80 minutes on the go. Want continuous protection? Just plug it into your car’s 12V cigarette lighter or directly into a wall socket.
🔑 Why Choose the CM4 Box Jammer?
- Anti-Tracking Powerhouse – Blocks CDMA, GSM, GPS-L1, and GPS-L2 signals, disabling even the latest GSM GPS locators.
- Dual Power Options – Go portable with the internal battery or stay protected indefinitely with AC or in-car power supply.
- Built-in Antenna – No clumsy external antennas; discreet and stylish box design for easy carry.
- 10-15m Shielding Radius – Creates a secure privacy zone around you, blocking most consumer-grade GPS and GSM trackers.
- Smart Heat Management – High-efficiency radiator and fan ensure consistent performance without overheating.
- One-Button Simplicity – No complicated setup. Power it on, and you’re instantly protected.
⚙️ Technical Specs.
| Feature | Details |
|---|---|
| Size | 215 × 43 × 90 mm |
| Weight | 0.5 kg |
| Range | 10-15 meters |
| Battery | 12V 4Ah lithium, ~80 minutes runtime |
| Output Power | 1W per band, total up to 4W |
| Cooling | Radiator + built-in fan with vent design |
| Power Options | AC 220V / DC 12V (car cigarette lighter) |
| Antenna | Built-in omnidirectional |
| Kit Contents | CM4 jammer, AC adapter, car charger |
🚗 Best Uses for CM4 Car GPS Jammer
- Vehicle Anti-Tracking – Prevents rental cars, corporate fleets, or personal vehicles from being monitored by GPS locators.
- Personal Privacy – Protects individuals from hidden GSM or GPS tracking devices.
- Confidential Meetings – Keep sensitive discussions private by blocking positioning signals.
- Everyday Peace of Mind – Because nobody likes being followed without consent.
