Connectivity: Operates on GSM quad-band frequencies (850/900/1800/1900 MHz) and supports Dual SIM cards simultaneously.Design: Features a standard corded handset, a large LCD screen for caller ID and menu navigation, and a full numeric keypad.Signal Strength: Equipped with a high-gain, detachable TNC antenna to ensure reliable reception even in low-coverage zones.Power: Includes a 5V DC power adapter and an internal rechargeable backup battery (~1000mAh to 1500mAh) to maintain operation during power outages.