1. suitable for iPhone, and other digital devices 2. for Samsng, NOKIA, HTC etc 3. input 5V/1 ... <3.3V,the Product start electro-discharge and Low voltage protection, Indicator light flashing, flashing 10s after, product shut down ... °C~60°C 10%-95% RH Protection low power consumption in standby modes, over-temperature protection, overload protection,WarrantyOne Year! 3. Operation instructions: Charging ...