Dudao 3.1A Smart 2x USB Car Charger. Intelligent car charger with a safe charging function. Safety hammer - The design of the lower part of the charger allows it to be used as an emergency safety hammer to break car windows in critical situations. Automatic voltage distribution - Regardless of which port the phone is connected to, its energy is replenished at the maximum possible speed. When two devices are being charged, the voltage is divided accordingly and adjusted for each device. Safe charging - The accessory adjusts the voltage according to the device's charging state. The energy replenishment starts at a slower pace, then accelerates to the maximum allowable speed, slows down again after exceeding 80%, and finishes the charging process gently. This ensures the condition and safety of the battery. Charge up to two devices simultaneously - Two devices can be charged at the same time through two ports. Durability and resilience - The charger’s casing is made from a high-quality aluminum alloy. High resistance and an elegant appearance. Multiple protection levels - Including protection against overcharging, overheating, and short circuits. Complete protection for the accessory and the phone. Convenience and stability - The design of the charger allows for easy removal from the socket. Specification: Brand: Dudao, Name: R5, Material: Aluminum, Ports: 2x USB, Output current: 5V / 3.1A.