Specifications: 3.4A CHARGER USB Type Input: DC 12-24V Output: 5V=3.4A For SAMSUNG , HUAWEI , OPPO , VIVO , ALL ANDROID MOBILES ... etc Overcharging and shot-circuit protection. For dry and indoor use only. Plug the charger into wall socket and use both USB ports with USB cable or cables simultaneously for smooth charging. One micro USB cable inside. Disconnect when not in use.   All AMB Walk n Talk Products are exchangeable within 14 days from the date of purchase subject to excellent physical condition & All AMB products are in warranty for period of 12 months.