4-PACK DUAL PORT CHARGERPortable charger with two USB-A ports (10.5 watts), charge any 2 devices at the same time; phone, tablet, headphones, portable charger and more. Input: AC100-240V (US & World standard) Output: DC 5V/2.1A. Wide voltage range to meet various safety voltage standards. 10.5W USB-A Power Adapter provides fast, efficient charging at home, in the office or on the go. (Does not support Qualcomm Quick Charge). SUPERIOR SAFETYUSB charger block cube has the function of automatic protection circuit. Intelligent circuit design protects against short circuit, overheating, overcurrent and overcharging, keeping your device safe and ensuring safer overnight charging. The phone charger's MultiProtect 9-point safety system provides all-round protection for you and your devices. Internal safety switch for ultimate protection; automatic shutdown; energy efficient. SPECIFICALLY DESIGNEDFire retardant material. Heat-resistant and anti-throw design, compact,