- Efficient Charging: Features a dual USB output with 5V/4.2A, enabling simultaneous charging of two devices, saving you time and enhancing convenience. - Integrated Digital Voltmeter: The yellow display allows you to monitor voltage levels, providing peace of mind and ensuring your devices are charging safely. - Outdoor Compatibility: Equipped with a double USB cover and a cigarette lighter interface, this charger is designed for use in various outdoor environments, making it perfect for road trips and camping. - Comprehensive Protection: Built-in safety features include reverse polarity protection, over-current protection, overheating protection, and short circuit protection, ensuring your devices remain safe during charging. - Versatile Applications: Ideal for use in vehicles, during outdoor activities, or at home, this charger seamlessly powers smartphones, tablets, GPS devices, and other USB-powered electronics. - User-Friendly Design: An on/off button contributes to reliability and ease of use.