UL certification 5V 1.5A power adapter USB charger block will not overheat when working, wall charger has an intelligent protection system against overcharge, overcurrent and overheating. USB wall plug is 0.9 inches wide and will not occupy the position of other plugs when working. Average continuous work for 2 years without failure. Lightweight, 1.2 ounces. | Multi-working environment: charging mobile phones indoors, companies, and offices. It is more suitable for charging mobile phones before going to bed. After being fully charged, wall charger plug will automatically stop charging. The power adapter is also suitable for travel, warehouses, workshops, etc. to provide conversion power for small electrical appliances with USB interfaces without batteries. | INPUT: 100-240V, OUTPUT: 5.0V, 1.5A (1500mA).USB wall adapter 1.5a can be used for mobile phone charging and power adapter. | USB plug adapter compatible for all USB-A port smartphones, including: Samsung, HTC, Oneplus, LG, HTC, Nokia, MP3, MP4 players, Bluetooth speakers, etc. | Double 24 service: 24-hour online communication, free return and exchange within 24 months.