Vinsic Wireless Charger Pad for Qi Enabled Devices This product is with an 18-month warranty, and Vinsic always provides you quality after-sale service. Safe to Use: It supports current & voltage limiting, safe to charge your device via this wireless charger. We suggest you don't use your phone when it is during charging, otherwise it may get even warmer. Use the wall adapter with output rating of AT LEAST 5V/2A. NOTE: In order to get the prefect wireless charging experience, please use the wall adapter with output rating of AT LEAST 2A. PROTECTIVE CASES is suggested to be REMOVED during charging. Wireless Charger : This wireless charger has Qi--the new universal standard for charging. All the Qi-enabled devices can be charged. Freedom of Placement: No annoying magnets to align or secret spots to find in order to charge your device. Some smartphones need an extra receiver module, such as iPhone/Samsung Galaxy. Make Your Life Simple: Just put your Qi-enabled device on its charging area to start charging. You will find it a good solution for your simple digital life.